nicki, ian,ben,ashley

Collegiate student athletes vs. Collegiate student non-athletes

Ian SchrefflerNicole SchiffnerBenjamin Webb

Ashley Thorpe

DilemmaDoes being a collegiate student athlete have an effect on a student’s GPA vs. a regular collegiate non-athlete’s GPA?

Background InformationArticles online

More than 400,000 student athletes participate in organized NCAA sports, as of 2010

Student athletes need certain GPAs in order to participate in organized sports

Minimum GPA of 1.8 after freshman yearAthletes advised to take up majors that are

“easier” and where there are clusters of athletes

HypothesisCollegiate student athletes have a lower

grade point average then students who do not participate in organized NCAA sports.

Questions

Target AudienceScholarly athletes Vs. Non- Athletes

College Students between the ages of 18-23

Males Vs. Females

Sampling PlanSince our group consists of people that both

play sports and don’t play sports, we can survey people from all teams and non-athlete college students. We were sure not to ask just friends. To ensure that it was random sampling we went to the sub at different times of the day and handed out surveys until we had enough data.

Summary of RespondentsSports:-Football-Baseball-Soccer-Wrestling-Lacrosse-Basketball-Power lifting-Field Hockey

Total of 50 respondentsMajors:-Education-Criminology-Biology-Accounting-Psychology-Engineering-EES-Communications-Business

Method of Survey AdministrationSurveys were handed out in the SUB, and in

the library.We also asked different survey questions than

interview questions.Does playing sports take away from study

time?If you didn’t play a sport would you have a

higher GPA?Are your grades your top priority?Is studying for a test a good reason to skip

class?If an athlete, are sports your top priority?

GPA 1= 0-2.02= 2.1-2.53= 2.6-3.04= 3.1-3.55= 3.6-4.0

Sport 0= n/a1= soccer2= football3= baseball4= wrestling5= lacrosse6= basketball7=powerlifting8=field hockey

How many hours do you study (per day)? 1= 0-1 hour2= 2-3 hours3= 4-5 hours4= 5+ hours

Age 1= 182= 193= 204= 215= 226= 23

Major 1= education2= Criminology3= biology4= accounting5= sociology6= engineering7= EES8= communications9= business10- psychology

Athlete? Yes- 1No- 2

# of credits 1= 12 2=133= 14 4=155=16 6=177=18

How many hours per day do have practice/mandatory team obligations (per day)?

1= 0-1 hours 2= 2-3hours3= 4-5 hours4= 5+ hours

2 3 4 50

5

10

15

20

25

30

1; 1

2; 10

Athletes Vs. Non-Athletes GPAC

ount

of

People

Football25%

Soccer42%

Baseball2%

Wrestling13%

Locrosse2%

Basketball9%

Power lifting2%

Field Hocky5%

Team Time spent Studying

1 2 3 4 5 6 70

2

4

6

8

10

12

14

16

18

12

Num

ber

of

people

Non-athletes take more credits

HYPOTHESIS TESTS sample mean 2.27about 3.5 - 4 hours

population mean 2.08reference value about 2 - 3 hours

stdev 0.83

sample size 26

Do non athletes study more than athletes?

NULL: <= 2.08m Non athletes do study more than athletes

ALTERNATIVE: > 2.08m Non athletes do not study more than athletes

one-tailed or two-tailed? 1

test statistic (obs) 1.17

critical measure 1.71 degrees of freedom 25

|obs| > critical? no

p-value 0.13

a-level 0.05

p-value < a-level? no

do not reject!

Non athletes do study more than athletes

• 1 SHT • Do Non athletes study more than athletes?• Result- Non athletes do study more• Do not reject the null• Observation is smaller than critical measure, and the A-value is

smaller than the P-value

Does playing a sport impact GPALine Fit Plot to explain GPA based on if an

individual is an athlete or not an athlete

Null: there is no relationship

Alternative: there is a relationship

Intercept coefficient says Athletes average GPA is a 3.076

Sport coefficient= slopePositive slope

Non athlete -> athlete GPA rises by .42

Coefficients Standard Error t Stat P-value Lower 95% Upper 95% Lower 95.0% Upper 95.0%Intercept 3.076923077 0.319228195 9.638632 8.33E-13 2.435071773 3.71877438 2.435071773 3.718774381Sports 0.423076923 0.199517622 2.120499 0.039158 0.021919858 0.82423399 0.021919858 0.824233988

Coefficients

Regression StatsRsquare= .08

8% variability in GPA Standard error= .70

70% chance there could be a mistake in the prediction

Pvalue= .03Pvalue< .05 so reject the NullThere is a relationship between being an

athlete or not and GPA. Athletes GPAs are lower.

Regression StatisticsMultiple R 0.29266638R Square 0.08565361Adjusted R Square 0.066604727Standard Error 0.70483677Observations 50

0 1 2 3 4 5 6 7 80

1

2

3

4

5

6

ATHLETES credits vs. GPA's

Credits

GP

A

credits gpa

7 4

5 4

4 3

7 4

5 3

1 4

4 3

5 3

7 3

3 4

5 4

4 4

4 3

5 3

5 4

5 3

4 5

4 2

7 4

4 4

7 3

5 4

2 3

2 3

ATHLETES credits vs GPA

CORRELATION= .06

0 1 2 3 4 5 6 7 80

1

2

3

4

5

6

NON ATHLETES credits vs GPA's

Credits

GP

A

NON athletes credits vs gpa

credits gpa5 35 54 46 57 54 47 37 47 44 46 45 51 45 44 34 34 37 54 44 41 43 27 47 45 47 4

CORRELATION=.30

HYPOTHESIS TESTS x-value sample 1 1.881-2 hours x-value sample 2 2.132-3 hours

for the proportion proportion 1 7.8% proportion 2 8.9%

pooled proportion 0.084 sample size 1 24 sample size 2 24

Time studying Time at practice

std error 0.080

Do athletes spend more time studying than at practice?

NULL: 1 > = 2p pAthletes do not spend more time studying than practicing

ALTERNATIVE: 1 < 2p pAthletes do spend more time studying than practicing

one-tailed or two tailed? 1

enter 1 or 2 above

test statistic (obs) (0.130)

critical measure 1.645

|obs| > critical?? no

p-value 0.45

a-level 0.050 ←enter alpha level here

p-value < a-level?? no

DO NOT REJECT THE NULL

Athletes do not spend more time studying than practicing

• 2 test study time vs. practice• Do athletes spend more time studying than at practice?• Result- Athletes do not spend more time studying than practicing.• Observation is smaller than the critical measure, the P-value is

greater than the A-level.• Do not reject the null

HYPOTHESIS TESTS x-value sample 1 38 x-value sample 2 12



less than 3 hours more than 3 hours

std error 0.100

Are students GPA's higher when they spend more time studying?

NULL: 1 > = 2p pStudents GPA's are not higher when they studying more than 3 hours

ALTERNATIVE: 1 < 2p pStudents GPA's are higher when they study more than 3 hours


enter 1 or 2 above

test statistic (obs) 5.200


|obs| > critical?? YES

p-value 0.00


p-value < a-level?? YES

REJECT THE NULL

Students GPA's are higher when they study more than 3 hours

• Studying = higher GPA test• Are students GPA higher when they spend more time studying?• the observation is larger than the critical measure, and the p-

value is smaller than the a-level• Reject the null• Students GPA’s are higher when they study more than 3 hours.

HYPOTHESIS TESTS x-value sample 1 24 x-value sample 2 26



Athletes Non-athletes

std error 0.100

Are athletes GPA's lower than non athlete GPA's?

NULL: 1 > = 2p pAthletes GPA's are lower than non athletes GPA's

ALTERNATIVE: 1 < 2p pAthletes GPA's are not lower than non athletes GPA's


enter 1 or 2 above

test statistic (obs) (0.400)


|obs| > critical?? no

p-value 0.34


p-value < a-level?? no

DO NOT REJECT THE NULL

ATHLETES GPA'S ARE LOWER THAN NON ATHLETE GPA'S

• 2 test athletes Vs. Non athletes GPA’s• Are athletes GPA’s lower than non athletes GPA’s?• observation is smaller than then critical measure so reject

that, and the p-value is larger than the a-level so you reject that also

• Do not reject the null• Athletes GPA’s are lower than non athletes GPA’s.

ConclusionNon-athletes study more than athletes.Athletes do not spend more time studying

than practicing.Student’s GPAs are higher when they study

for more than 3 hours.

Athlete’s GPAs are lower than non-athlete’s GPAs!

SuggestionsGather more data.

Different collegesTest just one major.

Make more specific.Make survey questions more specific.

QUESTIONS???

nicki, ian,ben,ashley

Sports

athletes study

students gpa

organized ncaa sports

non athletescollege

dont play sports

nonathlete college students

organized sportsminimum

different survey questions