Multiple Choice 1 In a onefactor betweensubjects analysis of

Multiple Choice

1. In a one-factor between-subjects analysis of variance, the F statistic is defined as ________.

a. MS_A / df_Error

b. MS_Total / MS_Error

c. SS_A / df_A

d. MS_A / MS_Error

e. SS_Error / df_Error

2. SS_A and SS_Error are also called ___________ and ____________ sums of squares, respectively.

a. between groups; mean groups

b. within groups; between groups

c. between groups; within groups

d. treatments; within groups

e. c and d

3. If SS_total = 80, SS_A = 50, SS_Error = 30, df_total = 15, df_A = 3, and df_Error = 12 in a one-factor between-subjects analysis of variance, then MS_Error =_____

a. 1.43

b. 0.83

c. 2.5

d. 16.67

e. 5.33

4. Based on the sums of squares and degrees of freedom above in (c), what are the values of F_obs and F_crit (assume ?=0.05)? Show work and reasoning in choosing the correct answer.

a. 2.13; 2.54

b. 6.67; 2.54

c. 2.13; 2.85

d. 6.67; 2.85

e. a or c

Solution

1.c. SSA / dfA

2 .b. within groups; between groups

3.d. 16.67

4.b. 6.67; 2.54