What Is/Are Statistics? Dr. Carol T. Benson, PhD Retired from EYH and ISU.

What Is/Are Statistics?

Dr. Carol T. Benson, PhDRetired from EYH and ISU

A little bit about me. As a little girl,

I liked to read, play with dolls, follow my big brothers

around, Play jacks and other

games, etc.

My Family Education

Father completed HSwith family support

Mother dropped out atend of sophomore year

Both brothers trained in Navy – electronics / computers

About me My education

Libertyville HS Illinois State U (BA in ED,

Math and French Illinois State U (MS in Math Ed) Moves and family Illinois State U (DA, PhD)

Still about me Extra Activities

HS clubs – Latin, French,Honor Soc., Math, Library

Worked at Glass Shop Worked at Public Library Not good at sports Boyfriends (one at a time)

Soulmate I met a wonderful man

as a senior in college. We married the next year. My life changed. ISU for Masters I taught at ISU for 1 year. Moved to Minnesota, then

Iowa for his career.

My Family Became wife Became mother Four children in 4 years! John, Elizabeth, Rebecca, Catherine. I got to stay home with them for15

years! Read to them Took them to lessons, etc.

Work and opportunities Research

Gender equity in math Use of technology

college level Student reasoning in

probability using models for elementary school

Work and opportunities Teaching and Mentoring

High school math teacher University math, education,

technology teacher Academic advisor EYH conference director Mentor to student teachers

What IS Statistics? a branch of mathematics dealing with

the collection, analysis, interpretation, and presentation of masses of numerical data (free Webster online dictionary)

Often used to DESCRIBE something that can be measured or counted (mean,…)

Also often used to PREDICT based upon data sampled from a population

What ARE Statistics? Statistics are numbers that can be

computed from sample data without making use of any unknown parameters. (The Practice of Statistics by Yates et al.)

A parameter is a number that describes the population.

What we do with Statistics Often, we don’t collect information

about the entire population because it would be too costly, time consuming, and maybe even impossible.

We take a sample, compute a statistic, then use that information and some assumptions to predict what the population would be like.

Global Pay by Gender Gender pay gaps persist around the

world, including in the United States. According to public information collected by the International Trade Union Confederation (ITUC), the global gender pay gap ranges from 3 percent to 51 percent with a global average of 17 percent (ITUC 2009).

Gender and Work Women’s participation in the U.S. labor

force climbed during the 1970s and 1980s, reaching 60 percent in 2000. However, in 2010 this figure has declined to 46.7 percent and is not expected to increase by 2018 (DOL 2011).

Gender and Power In terms of women in leadership

positions, in 2009 only 24 percent of CEOs in the US were women and they earned 74.5 percent as much as male CEOs (BLS 2010 p.9).

Education graph

Texting Half of teens send 50 or more text

messages a day, or 1,500 texts a month, and one in three send more than 100 texts a day, or more than 3,000 texts a month. (PI)

15% of teens who are texters send more than 200 texts a day, or more than 6,000 texts a month. (PI)

Boys typically send and receive 30 texts a day; girls typically send and receive 80 messages per day. (PI)

Cell Phones The global youth mobile market is worth

$360 billion annually – 10x the size of the global recorded music industry (MY)

62% of all youth handset purchase decisions are influenced by peers not advertising (MY)

By 2012, one in five of the world’s mobile phone owning youth will be living in India (MY)

Teens with smart phones __% use their phones to take pictures. __% share pictures with others. __% play music on their phones. __% play games on their phones. __% exchange videos on their phones.

Teens with smart phones 83% use their phones to take pictures. 64% share pictures with others. 60% play music on their phones. 46% play games on their phones. 32% exchange videos on their phones.

What are the numbers? __% exchange instant messages on their

phones. __% go online for general purposes on

their phones. __% access social network sites on their

phones. __% use email on their phones. __% purchase things via their phones.

The numbers. 31% exchange instant messages on

their phones. 27% go online for general purposes on

their phones. 23% access social network sites on their

phones. 21% use email on their phones. 11% purchase things via their phones.

Wireless phone ownership

Computers Nearly seven in ten (69%) teens ages

12-17 have a computer (PI) Nearly four in five teens (79%) have an

iPod or other mp3 player (PI) 80% of teens between the ages of 12

and 17 have a game console like a Wii, an Xbox or a PlayStation. (PI)

Technology use - %? __% would look up a store after learning

their friend had checked in. (Mr Y) __% have liked more than 20 brands on

Facebook. (Mr Y) __% report researching the next model

for their current product, immediately after making a purchase (Mr Y)

__% report having liked a brand on Facebook just to receive an offer (Mr Y)

Technology use 66% would look up a store after learning

their friend had checked in. (Mr Y) 43% have liked more than 20 brands on

Facebook. (Mr Y) 65% report researching the next model

for their current product, immediately after making a purchase (Mr Y)

71% report having liked a brand on Facebook just to receive an offer (Mr Y)

Our own data collection

How many children are in your family?# kids

1 2 3 4 5 6 7 8 9+

# you

What about us? What is your question that can be

answered with a number? Ask at least 10 people. Write your question and the number of

times you got each response. Hand in your results as you leave. We’ll post results on our web site.