kelsonm3420
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Which of the statements are correct? (2 points)

The chi-square goodness-of-fit test uses n − 1 degrees of freedom.
A condition for using the chi-square goodness-of-fit test is that all expected counts must be at least five.
A condition for using the chi-square goodness-of-fit test is the observations are based on a random sample.
I only
II only
I and II only
II and III only
I, II, and III

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akposevictor

The statements that are correct regarding the chi-square goodness-of-fit test are: II and III only.

What is a Chi-square Goodness-of-fit Test?

A chi-square goodness-of-fit test can be described as one that determines whether the sample data is representative of the full population.

The following conditions for the use of the chi-square goodness-of-fit test include:

  • Variables must be categorical.
  • Random sampling method is used.
  • There should be at least 5 expected value of the number of sample observation of each level.
  • The degree of freedom for chi-square goodness of fit test is, number of levels (k) of the categorical variable minus 1 = k - 1 NOT n -1.

Therefore, the statements that are correct regarding the chi-square goodness-of-fit test are: II and III only.

Learn more about the chi-square goodness-of-fit test on:

https://brainly.com/question/17228811

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