Each cell in a 2 by 2 table contains 20 observed cases.Which of the following statements is/are true about these results?
A)The results are statistically significant.
B)There are 19 degrees of freedom
C)The chi-square statistic equals zero.
D)The Fisher's Exact Test should be used.

Question

Quizplus · Accepted Answer

The chi-square statistic equals zero, which means that there is no difference between the observed and expected frequencies. Therefore, the results are not statistically significant. The degrees of freedom for a 2 by 2 table is 1, not 19. Fisher's Exact Test is usually used when the sample size is small or the expected frequencies are less than 5, but since all cells have a frequency of 20, Fisher's Exact Test is not necessary in this case.

Each Cell in a 2 by 2 Table Contains 20