ERIC EJ990990: Math at Work: Using Numbers on the Job

2012·0.79 MB·English

by  ERIC

Math at work:
Using numbers on the job
L
ois Coles teaches algebra to eighth
graders in Brentwood, Tennessee.
Each year she has her students talk to
workers in careers that interest them, asking
for examples of how they use math in their
jobs.
“It’s unbelievable,” says Coles. “The
students ask everyone—from figure skaters to
real estate agents, nurses, and airline pilots—
and they all give us math problems.”
Math is used in many occupations. And,
experts say, workers with a strong background
in mathematics are increasingly in demand.
“Employers are looking for math majors a
lot more than they used to,” says Mike Breen
of the American Mathematical Society. That
equals prime opportunity for career-minded
math enthusiasts.
This article describes how math factors
into careers. The first section talks about
some of the ways workers use math in the
workplace. The second section focuses on
three occupations that use math: cryptologists,
health data analysts, and math teachers. A “Mathematics is so prevalent across all
third section highlights reasons why workers kinds of fields,” says Michael Pearson, execu-
enjoy their math-related careers and discusses tive director of the Mathematical Associa-
some of their challenges. And a final section tion of America. Math-intensive occupations
suggests sources for more information. include computational biologists, who use Elka Torpey
statistics to analyze molecular datasets; graph-
Math: A formula ics programmers, who use vector mathematics
to create movies and video games; and patent
for career success lawyers, who use mathematical concepts to
better understand some inventions.
Mastering mathematics is helpful in almost The level of math needed in occupations
any career. Learning math helps workers ranges from basic calculations to complex
analyze and solve problems—abilities that mathematical theories. Carpenters, electri-
most employers value. And math teaches cians, and other skilled trade workers may
other important practices, including how to use basic geometry and algebra to calculate
approach tasks methodically, pay attention to the cost and amount of materials they need.
Elka Torpey is an
detail, and think abstractly. Financial quantitative analysts, in contrast,
economist in the
Some number-focused occupations, often use graduate-level statistical, quantita-
Office of Occupa-
such as accountants and cost estimators, are tive, or econometric techniques to create
obvious. However, workers in other occupa- mathematical models for analyzing invest- tional Statistics
tions combine mathematical know-how with ments. and Employment
knowledge specific to their field. Science, Even in occupations that don’t require Projections, BLS.
technology, and engineering disciplines, for it, math knowledge can open the door to lots She is available
example, rely heavily on mathematics. And of careers, says Pearson: “A mathematical at torpey.elka@
other disciplines, such as economics, also use background gives you the chance to move in bls.gov.
math. all kinds of directions.”
Fall 2012 • Occupational Outlook Quarterly 3
Math on the job: A look Today, many encryptions are created with
algorithms, sets of mathematical instruc-
at three occupations tions that computers use to make information
unreadable for people who don’t have the key.
We know that lots of workers use math on the Depending on their project, cryptologists rely
job. But in what way do they use it? on various types of math: abstract algebra,
In the three occupations described here— number theory, probability, statistics, and
cryptologist, health data analyst, and math other specialties. Other job titles for cryptolo-
teacher—workers use math in different ways. gists include cryptanalyst and cryptographer.
Details about their math-related job tasks Cryptologists often write computer pro-
follow, along with the occupations’ outlook, grams for the algorithms they are creating,
wages, and required preparation. refining, or trying to break. Most encryption
A box on page 9 covers four math occupa- algorithms are one of two types: symmetric
tions profiled in the Occupational Outlook key or asymmetric (public) key. In symmetric-
Handbook: actuaries, mathematicians, opera- key encryption, the person encrypting the
tions research analysts, and statisticians. information and the person receiving that
information use the same key for decryption.
Cryptologist
Asymmetric-key encryption uses two different
Private information—from government keys.
secrets to personal financial records—is usu- The need for two keys in public-key
ally intended to be kept private. This type encryption increases its complexity. “The
of information is usually kept secret by a algorithms used for public-key cryptology
computerized encryption scheme. Cryptolo- tend to be very mathematical, relying on large
gists use their knowledge of math to create, prime numbers, exponentiation, or other con-
to improve—and, sometimes, to break these cepts to prove they’re secure,” says Greg Rose,
encryptions. a cryptologist in San Diego, California.
Workers use math on
the job in different
ways, depending on
their occupation.
4 Occupational Outlook Quarterly • Fall 2012
Rose was working as a security engineer 2011, BLS data show, there were 2,980 wage
when he identified weaknesses in cell phone and salary mathematicians. These workers
encryption algorithms. He used cryptology had a median annual wage of $101,040.
to develop a better way to encrypt the infor- According to BLS, mathematicians are
mation. “It’s very exciting,” says Rose, “like projected to add about 500 new jobs between
solving puzzles.” 2010 and 2020. Many jobs related to national
Unlike Rose, cryptologist Roger Barkan security are expected to have continued
tries to break encryptions created by potential employment growth. Still, competition for
U.S. adversaries. His work for the National cryptologist and other mathematician jobs
Security Agency in Fort Meade, Maryland, is expected, given the relatively few number
involves analyzing encrypted data to decipher of available positions. Workers may need to
this secret information. relocate to an area where major employers are
To determine if an encryption can be based, such as near Washington, D.C.
broken, cryptologists like Barkan use sta- Most cryptologists work for the National
tistical analysis to figure out which aspects Security Agency or other government intel-
of encrypted data are clues to solving the ligence agencies or in academia. Some large,
encryption—and which are merely coinci- multinational corporations also hire these
dental. The results of their inquiry determine workers, industry sources say.
whether they design followup tests to look for Many types of businesses—such as banks
additional clues. and cable companies—rely on cryptology
For example, Barkan might look at an to help keep information secure. Most of
encrypted message and notice that the binary the encryption algorithms in use today have
data contain more ones than zeros. His next already been written, however, so the number
step would be to use statistics to decide of jobs with these organizations is small.
π
whether the number of ones and zeros is Preparation. Cryptologists need excellent
meaningful. This analysis helps Barkan to math, computer programming, and problem-
determine what the encryption scheme is solving skills. They also must be organized,
or how the decrypted message may appear. persistent, and able to think creatively.
“Ultimately, a good cryptologist needs to be Most cryptologists need at least a bach-
like a detective,” he says. elor’s degree in mathematics or a related field
Another task cryptologists have is to to enter the occupation. For some positions,
ensure that algorithms are as effective as a master’s degree or Ph.D. is required. But
possible. “There are plenty of algorithms sometimes, related experience can substitute
out there that work,” says Rose, “but their for education.
efficiency is becoming more important.” For For some entry-level government cryp-
example, cryptologists may refine algorithms tologist positions, workers can have a college
so that they take less time to complete and use degree in a nontechnical field, such as music
less computer memory. or history. These workers provide a different
The encryption algorithms that cryptolo- perspective when helping to analyze encryp-
gists work on are used around the world to tions—and, like other government cryptolo-
help keep information secure. “I’ve written gists, they usually receive on-the-job training
a piece of math that millions of people use and take classes in subjects related to their
every day,” says cryptologist Bruce Schneier work.
of Minneapolis, Minnesota. “That’s pretty Cryptologists who work for the U.S.
cool.” government must pass a security background
Employment, wages, and outlook. BLS investigation and a polygraph test. An intern-
does not collect data specifically on cryptolo- ship with a federal agency that employs cryp-
gists. Many workers in this occupation are tologists is helpful for gaining experience and
classified by BLS as mathematicians. In May contacts in the field.
Fall 2012 • Occupational Outlook Quarterly 5
∞
Health data analyst specialize in helping their organization meet
data collection and reporting requirements.
Thanks to the work of health data analysts,
Workers other than health data analysts
math provides answers that help people make
also study health data. Medical records and
informed healthcare decisions. Health data
health information technicians, for example,
analysts collect, manage, and analyze health-
organize and manage data related to patient
care information. They use this information
care. Healthcare administrators, nurses, and
to identify ways to lower costs and improve
case managers sometimes analyze health
services.
information. And many statisticians, epide-
Some health data analysts perform math-
miologists, and medical scientists focus on
ematical calculations to better understand
interpreting medical and health data.
how a healthcare facility functions. Ellen
Employment, wages, and outlook. BLS
Berkowitz, a senior health data analyst in
does not collect data specifically on health
Toledo, Ohio, produces reports that compare
data analysts. Some of the duties of health
her hospital’s care with that of established best
data analysts are similar to those of medical
practice standards. She may calculate how
records and health information technicians.
long it typically takes for a patient to receive
BLS data show that in May 2011 wage and
an electrocardiogram (EKG), for example,
salary medical records and health informa-
or calculate the percentage of heart failure
tion technicians held 180,280 jobs and had a
patients readmitted within 30 days. Then,
median annual wage of $33,310.
depending on the results, Berkowitz tries to
Health data analysts who perform sophis-
identify areas for improvement and reports
ticated research often have tasks that overlap
the data in executive summaries, graphs, and
with those of statisticians or of epidemiolo-
other presentations.
gists. In May 2011, wage and salary epidemi-
Other health data analysts use statistics ologists held 4,610 jobs and earned a median
to establish connections between healthcare annual wage of $64,220. And BLS counted
experiences and patients’ results—and to 23,770 wage and salary statisticians, who had
make predictions about the future. Analysts a median annual wage of $73,880, in May
like Chet Deshmukh of Apex, North Carolina, 2011.
for example, may do a regression analysis
Anecdotal information suggests that
to determine which factors are most likely
wages for most health data analysts fall
to affect stroke patients’ rehabilitation and
between those of the technicians and statisti-
recovery times. “You start to connect the dots
cians—in the $40,000 to $60,000 range.
to envision certain patterns and trends,” says
BLS projects that employment for medi-
Deshmukh. “You take information specific to
cal records and health information techni-
one person and try to connect it to the overall
cians should grow faster than the average
population.”
for all occupations, adding 37,700 new jobs
Health data analysts’ jobs vary by between 2010 and 2020. Employment growth
employer and position. Analysts who work of epidemiologists is projected to be faster
for insurance companies, for example, may than average and to add 1,200 new jobs. And
develop predictive models to help the com- statistician employment is projected to grow at
pany determine ways to save costs by encour- an average rate and to add 3,500 new jobs.
aging at-risk plan members to take preventive Health data analysts work for hospitals,
measures. nursing homes, and other healthcare facili-
Most health data analysts work with elec- ties. Other major employers include insurance
tronic health records to compile and analyze companies, government agencies, research
data. Some analysts transfer data from paper- institutions, and consulting firms.
based to electronic records. Others set up Preparation. Health data analysts must
systems for entering health data. Still others be detail oriented and have good math and
6 Occupational Outlook Quarterly • Fall 2012
Health data analysts
use math to help people
make informed decisions
about healthcare.
analytical skills. They also must be able to health informatics, health services research, or
communicate well so that they can explain public health.
their findings to others. In addition, coursework in statistics,
Knowledge of healthcare practices is computer science, physical sciences, and busi-
important for health data analysts. These ness administration are valuable. Workers also
workers must understand disease classification must be comfortable using electronic health
systems, medical terminology, and health- records systems, as well as database, spread-
care reimbursement methods so that they can sheet, presentation, statistical, and other types
interpret data and understand how it relates to of software.
improving costs and patient care. Many health
Math teacher
data analysts have worked as medical cod-
ers. Others have experience in patient care or Math is used every day for many things, such
healthcare administration. as paying bills and measuring ingredients.
An associate’s degree is typically the With the help of math teachers, students gain
minimum education required to become a the math knowledge they need for every-
health data analyst. As job duties of health day tasks—and, at higher levels, they learn
data analysts evolve, some employers prefer to the advanced math skills required in some
hire workers who have a bachelor’s or higher careers.
degree, especially for positions requiring To help their students become more
higher level statistical analysis. Fields of study engaged, math teachers frequently use
may include health information management, real-world examples. For example, Nikita
Fall 2012 • Occupational Outlook Quarterly 7
Midamba, who teaches algebra, trigonom- statistics, differential equations, and other top-
etry, geometry, and basic math for a nonprofit ics at the undergraduate and graduate levels;
organization in Philadelphia, Pennsylvania, some also do original research.
uses nutrition labels and local crime statistics
Like all teachers, math teachers spend
to make math relatable for her students.
time creating lesson plans, presenting mate-
Math teachers also may use hooks—such rial to students, and grading assignments.
as clips from television shows or commer- They often use their math skills during these
cials—to attract students’ attention so that activities. When grading math problems, for
they become intrigued in a lesson or with a example, math teachers check students’ work
problem. Middle school algebra teacher Lois to ensure that students follow the proper steps
Coles, for example, has her students play to get their answers. Teachers also help stu-
games, and she tells jokes at the end of her dents prepare for standardized tests.
slideshow presentations. “If you can find ways Some teachers focus only on math. Oth-
to make math fun,” agrees Midamba, “stu- ers, especially those who work with younger
dents will learn it.” students, teach more than one subject. Math
By the very nature of their work, math teachers may specialize in education for spe-
teachers regularly apply their mathematical cific groups, such as elementary, postsecond-
knowledge on the job. The types of math that ary, or adult literacy and GED students.
they teach range from basic math, such as Because students learn in different ways,
addition and multiplication, at the elementary math teachers often use a variety of tech-
school level to more complex subjects, such niques to present concepts. For example,
as geometry and calculus, in high school.
Some math instructors and professors teach
(Continued on page 10)
To keep students
engaged in a lesson,
math teachers may tell
jokes or have students
play games in class.
8 Occupational Outlook Quarterly • Fall 2012
Four occupations in which math is prime
Some workers specialize in mathematics—or a par- Mathematician jobs typically require a master’s
ticular branch of it. These workers include actuaries, degree in mathematics, but many workers have a Ph.D.
mathematicians, operations research analysts, and stat- Some jobs are available for workers with a bachelor’s
isticians. The table shows BLS wage and employment degree.
data for each of these occupations.
Operations research analysts. To help organi-
Read the detailed profiles for these four occupa-
zations solve problems and improve decisionmak-
tions, listed under math occupations in the Occupa-
ing using mathematical models, operations research
tional Outlook Handbook, at www.bls.gov/ooh/math/
analysts collect and study information from databases
home.htm.
and other sources. They use their analyses to make
Actuaries. Sometimes called actuarial analysts,
recommendations related to production, sales, logistics,
actuaries use mathematical models to analyze statisti-
or other areas of operation.
cal data and to forecast risk. They help develop, price,
To enter the occupation, workers must know how
and evaluate products related to health insurance, life
to use advanced statistical and database software. In
insurance, property and casualty insurance, or pension
addition, they typically need a bachelor’s degree in
and retirement benefits.
operations research, management science, or a related
Actuaries typically need a bachelor’s degree in a
field. Degrees in mathematics, engineering, computer
discipline such as mathematics, statistics, business, or
science, physics, or other technical fields are also com-
actuarial science. Computer programming skills are
mon. Many employers prefer to hire people who have a
also important. To become fully qualified, actuaries
master’s or higher degree.
must pass a series of exams, but workers need not have
Statisticians. Statisticians collect and interpret
passed all of these exams before being hired. Employ-
data using a variety of statistical methods and theories.
ers often pay for the exams and allow time on the job
They design surveys and other methods for gathering
to study for them.
data representative of a population. Statisticians also
Mathematicians. These workers advance math-
identify trends in data, draw conclusions, and assess
ematical knowledge and solve problems using high-
whether their results are reliable.
level mathematics and technology. They explore new
mathematical theories and ideas in specific areas of These workers typically need a master’s degree in
math, such as geometry, number theory, or logic. And statistics, mathematics, or survey methodology. But a
they look for ways to apply mathematical principles to bachelor’s degree is sufficient for some entry-level jobs.
disciplines like engineering or science. Cryptologists, A Ph.D. usually is required for academic or research
described in greater detail above, are a type of math- jobs. Statisticians need computer programming skills
ematician. and use statistical software to analyze data.
Wages, employment, and outlook in math occupations,* May 2011 and projected 2010–20
May 2011 Projected 2010-20
Math occupations
Median annual wage Employment Numeric change Percent change
Actuaries $91,060 19,590 5,800 Faster than average
Mathematicians 101,040 2,980 500 About as fast as average
Operations research analysts 71,950 65,030 9,400 About as fast as average
Statisticians 73,880 23,770 3,500 About as fast as average
* Table includes the four mathematical occupations BLS profiles in the OOH. As the article explains, many other occupations use math.
Source: BLS, Occupational Employment Statistics Survey (wages and employment), Employment Projections Program (numeric and
percent change).
Fall 2012 • Occupational Outlook Quarterly 9
Math teachers must
be able to break down
complicated concepts
into ones that are
easier for their students
to grasp.
mathematical science teachers. Teachers typi-
(Continued from page 8)
cally work during a 10-month academic year,
some concepts may be explained using words with 2 months off in the summer.
and graphs along with numbers. Coles and According to BLS, the job outlook for
other math teachers combine two or more teachers varies by region of employment and
approaches to reach out to all types of learn- the level of education that they teach. Alto-
ers. “My kids get it,” Coles says. “One way or gether, teachers are projected to add more
another, they get it.” than 700,000 new jobs between 2010 and
2020. And because math is a subject for which
Employment, wages, and outlook. BLS
many schools report difficulty finding quali-
does not collect data on math teachers sepa-
fied instructors, math teachers are expected to
rately. Instead, BLS counts math teachers
have better job prospects than other types of
among other types of teachers.
teachers.
There were more than 3 million wage and
Most math teachers work in public or
salary elementary, middle, and high school
private elementary, middle, and high schools.
teachers in May 2011, according to BLS.
Others teach at the college level. Some, like
Adult literacy and GED teachers accounted
Midamba, work for community-based organi-
for about 68,000 additional wage and sal-
zations.
ary jobs. And postsecondary mathematical
Preparation. Creativity, patience, and
science teachers held about 54,000 wage and
enthusiasm about the subject matter are some
salary jobs.
of the most important qualities for teachers.
Median annual wages in May 2011 But teachers need other skills, too.
ranged from $47,370 for adult literacy and “You really have to be able to engage
GED teachers to $66,680 for postsecondary the students and be able to understand where
10 Occupational Outlook Quarterly • Fall 2012
they’re coming from,” says Midamba. “You BLS data show that math occupations
can know math, but that doesn’t necessarily (actuaries, mathematicians, operations
mean you will be a great math teacher.” The research analysts, and statisticians) had
ability to break down complicated concepts median annual wages that were more than
into ones that are easier to grasp is also double the $34,460 median annual wage for
important. all occupations in May 2011. And other occu-
Teachers typically need at least a bach- pations that require advanced math skills—
elor’s degree. Public school teachers also such as physicists, engineers, and computer
need a state-issued certification or license. To scientists—also had very high median
teach higher level math, workers often must annual wages: often close to or greater than
have majored or minored in mathematics or $100,000.
a related field. Teacher education classes and But those personal and financial rewards
supervised teaching experiences also help to are usually the result of hard work and study.
prepare these workers—and may be required Most math-intensive jobs require at least a
for certification. Specific requirements vary by bachelor’s degree. Others require a master’s
state or employer or by the group of students degree or Ph.D.
that workers teach. And even after years of study, finding the
Some teachers earn a master’s degree, answers to practical or theoretical problems
which may lead to higher pay. Those who in math isn’t always easy. Health data analyst
teach at the college level usually need a Ph.D.
Some math problems
Pluses and minuses
take years to solve,
of math work but workers say the
challenge makes their
There’s a lot to like about jobs that use math.
efforts gratifying.
“For something that many people tend to
think of as boring, mathematics is actually
really exciting,” says cryptologist Rose.
Finding opportunities to share that excite-
ment with others attracts workers to these
jobs. “Math is something I like,” says Mid-
amba, “and it’s rewarding for me to be able to
show students that math isn’t scary and that
they’re smart enough to do it.”
Career satisfaction starts early for math
workers. According to the National Center
for Education Statistics Baccalaureate and
Beyond Study, math majors in 2009 reported
higher levels of satisfaction with the challenge
of their work 1 year after graduation than
many other majors, including those in engi-
neering and engineering technology, computer
and information sciences, business, social sci-
ences, and biological or physical sciences.
Studying math often pays off right away:
math majors have starting salaries that are
higher than college graduates in many other
disciplines. (See the box on page 12.)
Fall 2012 • Occupational Outlook Quarterly 11