Hello! I need this to have a two sided ANOVA test on these numbers. Can you post
ID: 3223916 • Letter: H
Question
Hello! I need this to have a two sided ANOVA test on these numbers. Can you post a printout of the 2 way ANOVA. The question is, do the two factors, KEYBOARD and TIME, appear to influence production rate (NUMBER)? Use 5% significance. In this file, there are 3 columns, NUMBER is the number of forms processed by each employee, KEYBOARD is the keyboard type (coded 1, 2, or 3) and TIME is coded as 1 for morning and 2 for afternoon.
KEYBOARD1 KEYBOARD2 KEYBOARD3
TIME1 14 17 20
TIME1 15 19 18
TIME2 10 12 14
TIME2 8 13 12
Explanation / Answer
Answer:
Two factor ANOVA
KEYBOARD
Means:
K1
K2
K3
Time1
14.5
18.0
19.0
17.2
Time
Time2
9.0
12.5
13.0
11.5
11.8
15.3
16.0
14.3
2
replications per cell
ANOVA table
Source
SS
df
MS
F
p-value
Time
96.33
1
96.333
64.22
.0002
KEYBOARD
41.17
2
20.583
13.72
.0058
Interaction
0.17
2
0.083
0.06
.9464
Error
9.00
6
1.500
Total
146.67
11
Main effect Time is significant, F=64.22, P=0.0002.
Main effect Keyboard is significant, F=13.72, P=0.0058.
Interaction effect is not significant, F=0.06, P=0.9464.
Two factor ANOVA
KEYBOARD
Means:
K1
K2
K3
Time1
14.5
18.0
19.0
17.2
Time
Time2
9.0
12.5
13.0
11.5
11.8
15.3
16.0
14.3
2
replications per cell
ANOVA table
Source
SS
df
MS
F
p-value
Time
96.33
1
96.333
64.22
.0002
KEYBOARD
41.17
2
20.583
13.72
.0058
Interaction
0.17
2
0.083
0.06
.9464
Error
9.00
6
1.500
Total
146.67
11
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