Question

Problem #5. James and Walter were teaching different sections of the same course. When the course was completed, they compared the grades they gave to see whether their distributions of grades were essentially the same D & F James Walter 15 27 21 16 24 Use a chi-squared Test (with the level of significance α-Ο 01) to see whether the difference is significant.

Answer 1

Tabulated Statistics: C1, Worksheet columns

Rows: C1   Columns: Worksheet columns

	A	B	C	D&E	All
James	15	27	16	4	62
Expected count	11.18	24.39	20.33	6.10
Contribution to Chi-square	1.3050	0.2785	0.9214	0.7220
Walter	7	21	24	8	60
Expected count	10.82	23.61	19.67	5.90
Contribution to Chi-square	1.3485	0.2878	0.9521	0.7461
All	22	48	40	12	122

Cell Contents
      Count
      Expected count
      Contribution to Chi-square

Chi-Square Test

	Chi-Square	DF	P-Value
Pearson	6.561	3	0.087

Since P-value is greater than 0.01, So, we can conclude that difference is not significant