10 Chi-Square Tests

Front

What is the conclusion if the p-value is 0.00453 at a 5% significance level?

Back

Reject Ho

Front

How do you find the degrees of freedom in a chi-square test?

Back

Degrees of freedom = (# of categories - 1)

Front

What must be true about the expected values in a chi-square test?

Back

Expected values must be greater than or equal to 5.

Front

What is the formula for degrees of freedom in a Goodness of Fit (GOF) test?

Back

Degrees of freedom = # of categories - 1

Front

What does a p-value less than 0.05 indicate in hypothesis testing?

Back

It indicates that we reject the null hypothesis (Ho).

Front

What is the significance level in hypothesis testing?

Back

The significance level (alpha) is the probability of rejecting the null hypothesis when it is true.

Front

What is a chi-square test used for?

Back

A chi-square test is used to determine if there is a significant association between categorical variables.

Front

What is the null hypothesis (Ho) in a chi-square test?

Back

The null hypothesis states that there is no association between the variables.

Front

What is the alternative hypothesis (Ha) in a chi-square test?

Back

The alternative hypothesis states that there is an association between the variables.

Front

What is the relationship between observed and expected frequencies in a chi-square test?

Back

The chi-square statistic measures how much the observed frequencies deviate from the expected frequencies.