The last column in the table below is read as, "Partial Eta-squared " and is a concept that was NOT covered in the lectures. Partial n2 is used when there is a chance the data is not independent (click here to read more if interested ) Computing the values for "Partialn 2" is not difficult. Simply divide SSeffect by the sum of SSeffect and SSerror: For example, Partial n²(A) = SSA /(SSA + SSerror) P-values should be accurate to 4 decimal places and all other values accurate to 3 decimal places. Source SS df MS F-ratio P-value Partial n? Age (A) Color (B) 2 Interaction (A × B) 4

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The last column in the table below is read as, "Partial Eta-squared " and is a concept that was
2
NOT covered in the lectures. Partial n is used when there is a chance the data is not independent
(click here to read more if interested ) Computing the values for "Partial n 2" is not difficult. Simply
divide SSeffect by the sum of SSeffect and SSerror: For example, Partial n 2(A) = SSA /(SSA + SSerror)
P-values should be accurate to 4 decimal places and all other values accurate to 3 decimal
places.
Source
S
df
MS
F-ratio
P-value
Partial n
Age (A)
2
Color (B)
2
Interaction (A × B)
4
Error
63
Transcribed Image Text:The last column in the table below is read as, "Partial Eta-squared " and is a concept that was 2 NOT covered in the lectures. Partial n is used when there is a chance the data is not independent (click here to read more if interested ) Computing the values for "Partial n 2" is not difficult. Simply divide SSeffect by the sum of SSeffect and SSerror: For example, Partial n 2(A) = SSA /(SSA + SSerror) P-values should be accurate to 4 decimal places and all other values accurate to 3 decimal places. Source S df MS F-ratio P-value Partial n Age (A) 2 Color (B) 2 Interaction (A × B) 4 Error 63
An educational psychologist is examining response times to an on-screen stimulus. The researcher
believes there might be a weak effect from age, but expects a more pronounced effect for different
color contrasts. She decides to examine a black on white (B/W) combination compared to 2
alternatives: red on white (R/W) and yellow on blue (Y/B). Here is the data for response times (in
milliseconds):
Color Scheme
B/W R/W
Y/B
21
20
3
25
43
22
10
31
19
21
23
7
16-17
30
20
20
35
7
33
9
19
24
15
16
43
33
39
23
12
37
31
24
15
36
17
35
36
Age
18-19
14
36
28
16
19
45
20
17
23
25
47
31
22
19
28
19
20
26
25
41
39
40
31
17
20-21
28
29
43
28
26
40
17
27
36
24
29
43
Using MS Excel, conduct a 2-way ANOVA with a = 0.05. Fill in the summary table.
The last column in the table below is read as, "Partial Eta-squared " and is a concept that was
NOT covered in the lectures. Partial 72 is used when there is a chance the data is not independent
, 2
211
(click here to read more if interested ) Computing the values for "Partial 7
is not difficult. Simply
divide SSeffect by the sum of SSeffect and SSerror: For example, Partial n(A) = SSA /(SSA + SSerror)
P-values should be accurate to 4 decimal places and all other values accurate to 3 decimal
places.
Transcribed Image Text:An educational psychologist is examining response times to an on-screen stimulus. The researcher believes there might be a weak effect from age, but expects a more pronounced effect for different color contrasts. She decides to examine a black on white (B/W) combination compared to 2 alternatives: red on white (R/W) and yellow on blue (Y/B). Here is the data for response times (in milliseconds): Color Scheme B/W R/W Y/B 21 20 3 25 43 22 10 31 19 21 23 7 16-17 30 20 20 35 7 33 9 19 24 15 16 43 33 39 23 12 37 31 24 15 36 17 35 36 Age 18-19 14 36 28 16 19 45 20 17 23 25 47 31 22 19 28 19 20 26 25 41 39 40 31 17 20-21 28 29 43 28 26 40 17 27 36 24 29 43 Using MS Excel, conduct a 2-way ANOVA with a = 0.05. Fill in the summary table. The last column in the table below is read as, "Partial Eta-squared " and is a concept that was NOT covered in the lectures. Partial 72 is used when there is a chance the data is not independent , 2 211 (click here to read more if interested ) Computing the values for "Partial 7 is not difficult. Simply divide SSeffect by the sum of SSeffect and SSerror: For example, Partial n(A) = SSA /(SSA + SSerror) P-values should be accurate to 4 decimal places and all other values accurate to 3 decimal places.
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