In carrying out a chi-square goodness-of-fit test,what are the "k" and "m" terms in the "df = k - 1 - m" expression and why is each term present?

Name: In carrying out a chi-square goodness-of-fit test,what are the "k" and "m" terms in the "df = k - 1 - m" expression and why is each term present?
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The Answer of In carrying out a chi-square goodness-of-fit test,what are the "k" and "m" terms in the "df = k - 1 - m" expression and why is each term present?

In Carrying Out a Chi-Square Goodness-Of-Fit Test,what Are the "K