Question

1. Research into ratings of customer service various settings has resulted in the following data. With each setting type, n = 6 students were studied to see how satisfied they were with the service they received. Perform the appropriate statistical analysis to analyze this data BY HAND, including measures of effect size and summary tables where appropriate. Summarize your results in both a source table and APA-style statement.

In the mall	Online	At a stand-alone store
2	3	6
5	3	6
1	4	5
0	5	6
1	3	5
3	5	4

Answer 1

In the mall	Online	At a stand-alone store
2	3	6
5	3	6
1	4	5
0	5	6
1	3	5
3	5	4

Excel

data -> data analysis -> Anova Single Factor

Anova: Single Factor
SUMMARY
Groups	Count	Sum	Average	Variance
In the mall	6	12	2.0000	3.2000
Online	6	23	3.8333	0.9667
At a stand-alone store	6	32	5.3333	0.6667
ANOVA
Source of Variation	SS	df	MS	F	P-value	F crit
Between Groups	33.4444	2	16.7222	10.3793	0.0015	3.6823
Within Groups	24.1667	15	1.6111
Total	57.6111	17

p-value = 0.0015

We conduct Anova One way to test if there is any difference in groups

we get F = 10.3793 , p-value = 0.0015

since p-value < 0.05 , we reject the null hypothesis. We conclude that there is significant difference in means of different groups