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Day 5 - Chi-Square Test Quiz

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Question 1 of 4

 

What is the primary purpose of the Chi-Square Test in data analysis?

A

To predict future trends

B

To calculate the mean of a dataset

C

To determine if there's a significant difference between expected and observed frequencies

D

To rank data in order of importance

Question 2 of 4

 

In the Chi-Square Test, what does the term "degrees of freedom" represent?

A

The number of categories in the data

B

The number of categories minus one

C

The sample size

D

The significance level

Question 3 of 4

 

How do you interpret the result of a Chi-Square Test when the calculated chi-square statistic is less than the critical value from the distribution table?

A

Reject the null hypothesis

B

Fail to reject the null hypothesis

C

The test is inconclusive

D

Reject the alternative hypothesis

Question 4 of 4

 

What is the formula for calculating the chi-square statistic?

A

χ² = Σ(O - E)

B

χ² = Σ((O - E)² / E)

C

χ² = Σ(O / E)

D

χ² = Σ((O + E)² / E)

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