Page 116 - Quantitative Data Analysis

Quantitative Data Analysis
Simply Explained Using SPSS

Unit Exercises

1. You want to know if there is a relationship between having
gender and diabetes. Of 50 females, 27 have diabetes; of 50
males, 12 have diabetes.

a. What type of test would you use?

b. What is the null hypothesis?

c. What is the alternative hypothesis?

d. What are the degrees of freedom?

e. What is the critical value?

f. Construct the contingency table with observed
frequencies and marginal totals

g. Report the statistical and research conclusions.

2. Suppose you take a random sample of 20 students who are
using a new algebra text which features group work and
unit summaries and a second sample of 30 students who
are using a more traditional text. You compare student
achievement on the state test given to all students at the
end of the course. Use the frequency table to determine if
the proportions from each group are equal at each
performance level.

The Theory and Applications of Statistical Inferences 100