The test of independence and the test of homogeneity are completed identical fashion, using the contingency table to display and organize the calculations. Explain how these two hypothesis tests differ.
Q. 2In a set of all possible values a discrete random variable is countable, because the variable can assume values only at specific points on a scale of values, with inevitable gaps in-between.
Indicate whether the statement is true or false
Q. 3How does a test of homogeneity differ from a general contingency table problem?
Q. 4A random variable is any variable the numerical value of which is determined by a random experiment, and, thus, by chance.
Indicate whether the statement is true or false
Q. 5A chi-square test of independence is applied to a contingency table with 4 rows and 5 columns for two qualitative variables. The degrees of freedom for this test will be:
a. 20.
b. 16.
c. 15.
d. 12.
Q. 6The probability distribution for a discrete variable x is a formula, a table, or a graph providing p(x), the probability associated with each of the values of x.
Indicate whether the statement is true or false
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