Complete the following table where indicated?
|
Source |
SS |
df |
MS |
F |
|
Between |
117.17 |
(b)_____ |
(c)_____ |
(e)_____ |
|
Within |
(a)_____ |
9 |
(d)_____ |
|
|
Total |
177.67 |
11 |
||
Analyze the data from an independent
groups design using ANOVA.
a. What
is the value of dfwithin?
b. What
is the value of dfbetween?
c. What
is the value of Fobt?
d. Would
you reject H0 using a =
0.05?
a) SSwithin = SStotal - SSbetween = 177.67 - 117.17
=> SSwithin = 60.5
b) dfbetween = dftotal - dfwithin = 11 - 9 = 2
=> dfbetween = 2
c)
MSbetween= SSbetween / dfbetween= 117.17/2 =58.585
MSwithin = SSwithin / dfwithin = 60.5/9 = 6.7222
Fobt = MSbetween / MSwithin = 58.582 / 6.7222 = 8.7152
=> Fobt = 8.72
d) F critical value at a = 0.05 with df1 = 2 and df2 = 9 is,
Fcrit = 4.256
Since, Fobt = 8.72 > Fcrit = 4.256
=> We reject H0
Complete the following table where indicated? Source SS df MS F Between 117.17 (b)_____ (c)_____ (e)_____...
Consider the following ANOVA summary table: ANOVA Summary Table SS df MS Source F 9 7.3 Group (Between) Error (Within) Total 2400 30 The researcher was comparing 9 groups and found there were no significant differences between the groups. o The researcher was comparing 8 groups and found there were significant differences between the groups. O None of the choices give a correct description of study design and results. o The researcher was comparing 9 groups and found there were...
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Use the table below to answer the following questions.
Source
df
SS
MS
p-value
A
1
1.36
1.360
0.266
B
1
0.622
0.622
0.451
AB
1
22.405
22.405
0.000
Error
132
143.948
1.091
x
Total
135
168.335
x
x
a) How many levels (a) are there for factor A?
b) How many levels (b) are there for factor B?
1) Test for treatment effect α=0.05
H0: No treatment effect vs Ha: There is some treatment
effect
F=
Reject H0...
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