Let a = {1, 3, 5, 7}

question 13

Multiple Choice

Let A = {1, 3, 5, 7}
B = {5, 6, 7, 8}
C = {5, 8}
D = {2, 5, 8}
U = {1, 2, 3, 4, 5, 6, 7, 8}.
Determine whether the statement is true or false.
-{0} ⊆ U

• A) True
• B) False; the empty set is a subset of set U.
• C) False; {0} is not a subset of set U, because 0 is not an element of U.
• D) False; 0 is an element of set U, not a subset.

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Definitions:

Dependent Variable

In statistical modeling, the variable that is being studied and predicted, and whose variation is assumed to depend on other variables.

Independent Variable

A variable in a scientific experiment that is manipulated or changed to test its effects on the dependent variable.

Coefficient of Correlation

A numerical measure that indicates the strength and direction of a linear relationship between two variables.

Coefficient of Variation

A measure of relative variability computed as the ratio of the standard deviation to the mean, often expressed as a percentage.