In: Statistics and Probability
Spilich et al. (1992) ran an experiment in which three groups of smokers participated in a driving simulation video game. The Active Smokers groups (AS) smoked immediately before the game but during it. The data follow, where the dependent variable is an adjusted score related to the number of collisions.
NON SMOKERS |
DELAYED SMOKERS |
ACTIVE SMOKERS |
15 |
7 |
3 |
2 |
0 |
2 |
2 |
6 |
0 |
14 |
0 |
0 |
5 |
12 |
6 |
0 |
17 |
2 |
16 |
1 |
0 |
14 |
11 |
6 |
9 |
4 |
4 |
17 |
4 |
1 |
15 |
3 |
0 |
9 |
5 |
0 |
3 |
16 |
6 |
15 |
5 |
2 |
13 |
11 |
3 |
n= 15 |
n=15 |
n=15 |
Questions
a. What are the values of each category mean? _________
b. What is the value of Grand Mean?______________
c. What is the value of the SSB?________________
d. What is the value of the SSW?_____________
e. What is the value of the dfB?______________
f. What is the value of the dfW?______________
g. What is the value of the MSW?______________
h. What is the value of MSB?_______________
i. What is the value of F?________________
Show your work here: (***WORK NEEDS TO BE SHOWN TO RECEIVE FULL MARKS. FORMULAS NEED TO BE DONE BY HAND WITH EACH STEP AND NOT PUT INTO SPSS OR EXCEL, ETC)
from above:
a. What are the values of each category mean? =9.9333 , 6.8000, 2.3333
b) What is the value of Grand Mean? =6.3556
c)value of the SSB? =437.644
d) value of the SSW? =992.667
e) e value of the dfB?_=2
f) value of the dfW? =42
g) value of the MSW =437.644/2 =218.822
h) value of MSB =992.667/42 =23.635
i) value of F =218.822/23.635 =9.26