A researcher reports that her obtained chi square of -17.56 is significant because it exceeds the critical Chi square of -3.841 for an alpha of .05 with 2 degrees of freedom.What mistake has been made?
A)neither critical nor obtained Chi squares can have negative values
B)it is impossible to have only 2 degrees of freedom
C)it is impossible for obtained Chi square to exceed 10
D)a one-tailed test should have been used

Question

Quizplus · Accepted Answer

Both critical and obtained Chi squares cannot have negative values. A negative value for the obtained Chi square suggests an error in calculation.

A Researcher Reports That Her Obtained Chi Square of -17