Question

A store sells three different clothing designs and has recorded sales of each over five different 24-hour periods:

Design A         Design B         Design C

     16                    33                    23

     18                    31                    27

     19                    37                    21

     17                    29                    28

     13                    34                    25

Use the Kruskal-Wallis H test and the Chi-Square table at the 0.05 level to compare the three designs.

Answer 1

The statistical software output for this problem is :

Kruskal-Wallis results:

Data stored in separate columns.

DF	Chi-Square	P-value
2	12.5	0.0019

Summary statistics

Column	n	Median	Ave. Rank
A	5	17	3
B	5	33	13
C	5	25	8

P-value = 0.0019
P-value < 0.05

Reject the null hypothesis