1. An absent-minded professor thinks that he asked five students who took both P
ID: 3362646 • Letter: 1
Question
1. An absent-minded professor thinks that he asked five students who took both PSYC204 and PSYC305 to submit evaluations after completing assignments in 3 formats (computer-based, practice problems, group project) for each course. (Evaluations are scored from 1 (low) to 10 (high) in order to determine which assignment formats worked best in each course.) Calculate the anova and perform post hoc tests using Tukey hsd tests. Write a report. PSYC204 Computer Practice 9 PSYC305 Group Computer Practice Group 4 4 9Explanation / Answer
We are given the two way,
By using the two-way ANOVA we can analyzed the data,
5
we can analysed the data in excel ,
Source of Variation
SS
df
MS
F
P-value
F crit
Sample
9.633333
1
9.633333
9.47541
0.00515
4.259677
Columns
26.66667
2
13.33333
13.11475
0.000142
3.402826
Interaction
20.26667
2
10.13333
9.967213
0.000706
3.402826
Within
24.4
24
1.016667
Total
80.96667
29
conclusion is
1) there is not significant diffreance between the PSYC204 and PSYC305
2) there is significant diffreance between the Computer, practice and Group
we can analysed the signifant diffreance using the Tukey test.
HSD[.05]
Rows [2]
0.76
Columns [3]
1.13
Cells [6]
1.97
HSD=the absolute [unsigned] difference between any two means (row means, column means, or cell means) required for significance at the designated level: HSD[.05] for the .05 level; HSD[.01] for the .01 level. The HSD test between row means can be meaningfully performed only if the row effect is significant; between column means, only if the column effect is significant; and between cell means, only if the interaction effect is significant.
thanks
computer practice Groups 5 9 8 6 8 8 Phyc204 7 7 5 4 9 7 4 9 8 7 7 4 PSYC305 6 7 5 7 8 3 6 7 4 5 65
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