Chi-Square Test Quiz

What is the primary purpose of the Chi-Square test?

• To determine the mean of a dataset

• To calculate the standard deviation of a dataset

• To find the correlation between two numerical variables

• To assess the relationship between two categorical variables

What is the null hypothesis in the context of the Chi-Square test for gender and newspaper preference?

• There is a relationship between gender and newspaper preference

• Gender influences newspaper preference

• Newspaper preference is independent of all factors

• There is no relationship between gender and newspaper preference

Which software is mentioned for calculating the Chi-Square test?

• R

• Excel

• SPSS

• Data Tab

What does a p-value greater than the significance level indicate in a Chi-Square test?

• The null hypothesis is rejected

• The null hypothesis is accepted

• The test is inconclusive

• The alternative hypothesis is accepted

What should be the minimum expected frequency in each cell for the Chi-Square test assumptions to be met?

• Less than 5

• Any value is acceptable

• Exactly 5

• Greater than 5

What is the formula used to calculate the Chi-Square value manually?

• (Observed + Expected)^2 / Observed

• (Observed - Expected)^2 / Observed

• (Observed + Expected)^2 / Expected

• (Observed - Expected)^2 / Expected

What is required to calculate the critical Chi-Square value?

• Degrees of freedom and significance level

• Mean and standard deviation

• Correlation coefficient and p-value

• Sample size and variance

How are degrees of freedom calculated for a Chi-Square test?

• Number of rows plus number of columns

• Number of rows minus one times number of columns minus one

• Number of rows minus number of columns

• Number of rows times number of columns

What does a critical Chi-Square value larger than the calculated value indicate?

• The null hypothesis is rejected

• The null hypothesis is retained

• The alternative hypothesis is accepted

• The test is invalid

What is the significance level commonly used in Chi-Square tests?

• 0.05

• 0.01

• 0.50

• 0.10