Reference no: EM133181718

Question 1: Which ONE of the following IS a requirement for BOTH the chi square AND the Fisher's exact tests?

The variables may consist of quantitative (measured) data
Data must be normally distributed
Categories may be nominal
For both tests expected cell counts must be > 5 in at least 90% of the cells

Question 2: For analyzing the data in a 2x2 table, the Fisher's exact test is preferred (over the chi square test) for which ONE of the following data sets? (order is a;c;b;d)

7, 12, 14, 9
9, 12, 13, 4
7, 32, 10, 5
6, 20, 8, 7

Question 3: For which ONE of the following research questions would a chi square test of homogeneity (e.g. nxm where either n>2 and/or m>2) be the most appropriate?

Is a past smoking history associated with breast cancer risk among female miners?
Does the tuberculosis incidence rate vary by altitude above sea level in quarry workers?
Is a person's ethnicity associated with their choice of general practitioner in atown with 5 GPs?
Is the proportion of workers who smoke similar by diseased/ not diseased status?

Question 4: Which ONE of the following statements about the chi square test and the Fisher's exact test is NOT correct?

The word "exact" in the Fisher's exact test is meant to imply that the test result is unbiased
The Fisher's exact test may be performed for all cell counts if computer memory is adequate
The chi square test may yield biased results if sample size is small
The chi square test for independence always yields unbiased results if observed cell counts >5

Question 5:
If the null hypothesis is true, then calculate the correct expected cell value for the cell marked as "C" in the following 2x2 table.