Question

Use the Crosstabs option in the Descriptives menu to answer the questions based on the following scenario. (Be sure to select Chi-square from the Statistics submenu and Observed, Expected, Row, and Column in the Cells submenu. Assume a level of significance of .05) You are interested in determining the existence of a significant interaction between three Preferred Instructional Strategies and Gender. Two hundred students from three introductory psychology classes were asked about their preferred instructional strategy. The results are shown below:

	Computer Based Tech.	Video	Lecture
Male	8	17	42
Female	10	73	50

1. Write an appropriate null hypothesis for this analysis.
2. What is the value of the chi-square statistic?
3. What are the reported degrees of freedom?
4. What is the reported level of significance?
5. Based on the results of the chi- square test of independence, was there a statistically significant relationship between gender and the instructional strategy preference?
6. Based on the percentages within gender does there appear to be a clear instructional preference among males? If so, what strategy is preferred?
7. Based on the percentages within gender does there appear to be a clear instructional preference among females? If so, what strategy is preferred?
8. Were the preferred strategies identified by the males and females the same?
9. Report and interpret your findings as they might appear in an article.

Answer 1

1. Write an appropriate null hypothesis for this analysis.

There is no relationship between gender and the instructional strategy preference

Solution2:

O	E	0-E	(0-E)^2	(O-E)^2/E
8	6.03	1.97	3.8809	0.643599
17	30.15	-13.15	172.9225	5.735406
42	30.82	11.18	124.9924	4.055561
10	11.97	-1.97	3.8809	0.324219
73	59.85	13.15	172.9225	2.889265
50	61.18	-11.18	124.9924	2.043027
			CHI SQ	15.69108

CHI SQ=15.69

3. What are the reported degrees of freedom?

df=(r-1)(c-1)

r--rows

c---colums

df=(2-1)(3-1)

=1*2

=2

df=2

degrees of freedom=2

4. What is the reported level of significance?

alpha=0.05=5%