Assume a Researcher Has Grouped People into Categories by Age,as

question 4

Multiple Choice

Assume a researcher has grouped people into categories by age,as follows: 20-29,30-39,40-49,50-59.A person can only be placed into one of these categories,thus these categories are said to be

• A)exhaustive
• B)permutations
• C)joint probabilities
• D)mutually exclusive

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Definitions:

P-Value

A measure in statistics that helps to determine the significance of results from a hypothesis test, indicating whether the observed data are improbable under the null hypothesis.

Explanatory Variable

A variable in a statistical model that is believed to cause or influence the response variable.

Indicator Variable

A binary variable that takes the value of 0 or 1 to indicate the absence or presence of some categorical effect that may be expected to shift the outcome.

Logistic Regression

A statistical method used for binary classification that estimates the probability of a binary response based on one or more predictor variables.