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Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Contributors

Feedback

Hypothesis Testing using Chi square-test

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How is the chi-square statistics calculated?

a: by comparing the means of two samples Explanation

Explanation

b: by calculating the correlation coefficient Explanation

Explanation

c: by calculating the standard deviation of the data Explanation

Explanation

d: by comparing the observed and expected frequencies Explanation

Explanation

In a 4×3 contingency table used for testing the independence of attributes A and B, the distribution of test statistic under null hypothesis is:

a: chi-square with 6 df Explanation

Explanation

b: chi-square with 7 df Explanation

Explanation

c: chi-square with 12 df Explanation

Explanation

d: chi-square with 11 df Explanation

Explanation

What is the degree of freedom in a chi-square test?

a: the number of observations in the data Explanation

Explanation

b: the number of categories in the data Explanation

Explanation

c: the number of independent observations in the data Explanation

Explanation

d: the number of variables in the data Explanation

Explanation

For testing whether the theoretical probability distribution is suitable for the sample data, which of the following test is to be conducted?

a: chi-square test for independence Explanation

Explanation

b: chi-square test for goodness of fit Explanation

Explanation

c: z-test Explanation

Explanation

d: t-test Explanation

Explanation

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