STATI

STICS 1

040

TE

RM

PR

OJ E

CT

SP

RI N

G 2

01

2

THE QUESTION

Is a student’s Grade Point Average (GPA) correlated with their age?

THE PLAN:

Each member of the group went to different parts of the SLCC Campus at different times to gather 20 random samples of student’s age’s and their GPA.

Sample Size: 80

OUR DATACOMPILED DATA FOR TESTING CORRELATION BETWEEN AGE

AND GPA  

AGE GPA AGE GPA AGE GPA18 3.2 20 3.4 25 3.818 2.09 21 3.9 25 2.7518 3.7 21 3.4 25 3.418 3 21 3.3 26 3.818 3.9 21 3.3 26 318 3 21 2.9 27 3.118 3.7 21 3.975 28 2.519 3.4 21 3.52 28 419 3.8 21 3.8 28 3.619 3.9 21 2.49 28 3.819 3.2 21 3.5 29 2.819 3 22 3.6 30 3.919 3.5 22 2.8 30 2.519 3.5 22 3.3 31 3.619 3 22 3.8 32 3.819 3 22 4 32 2.819 4 22 2.5 32 3.319 3.5 22 3.48 33 2.720 3.6 22 3.8 33 3.420 3.8 22 3.5 33 3.620 3.9 23 3.7 34 3.920 3.9 23 2.4 35 3.720 2.9 24 2.2 36 3.720 2.4 24 2.9 42 3.820 3.6 24 3.6 43 3.420 3.6 24 3.85 47 2.520 3.5 24 2.5    

AGE Mean=24.0875Standard Deviation=6.22Minimum=18 Quartile 1=20 Median=22 Quartile 3=27.5 Maximum=47Range= 29Mode=19Outliers= 42, 43, 47

Statis

tics

for o

ur firs

t quan

titat

ive

varia

ble

HISTOGRAM FOR AGE

BOX PLOT FOR AGE

GPAMean=3.3519375Standard Deviation=.50Minimum=2.09 Quartile 1=3 Median=3.5 Quartile 3=3.8 Maximum=4Range=1.91Mode=3.8Outliers=No outliers

Statis

tics

for S

econ

d Quan

titat

ive

Varia

ble

HISTOGRAM FOR GPA

BOX PLOT FOR GPA

TESTI

NG CORRELA

TION

BETWEEN A

GE AND G

PA

r= -0.037470974 n=80Line of Regression

equation- y=a+bx y=3.4297+

(-.00323)x

SCATTER PLOT SHOWING LINE OF REGRESSION

IS THERE CORRELATION BETWEEN A STUDENTS GPA AND THEIR AGE??

NO

COMPARING THE DISTRIBUTION

A G E - R I G H T S K E W E D G P A - L E F T S K E W E D

CONCLUSION

There were many lurking variables such as

dedication to school work, past school

experience and education as well as outside

factors such as family, work and other

responsibilities.

We predict that if we may have had a larger

sample size, we may have seen some signs of

correlation occurring.

GROUP 5

Sara Call-data collection, Power Point, Speaker

Brock Hill-data collection, Compiling group Data, Speaker

Melinda Merkley-data collection, Speaker

Kristen Mitchell-data collection, Power Point, Speaker