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Moderate

Degrees of Freedom of Goodness of Fit

STATS-EYVRBL

A goodness of fit test is to be performed to see if data fits the Poisson distribution. There are $8$ categories and lambda must be estimated.

How many degrees of freedom should be used when finding the critical chi-square value?

A

$7$

B

$6$

C

$8$

D

$5$