Which Three Variables Have Been Shown to Have Strong Predictive

question 140

Multiple Choice

Which three variables have been shown to have strong predictive power for election results?

• A) whether the country is at war, productivity, and the divorce rate
• B) education status, life expectancy, corporate profits
• C) disposable income, the inflation rate, and years in office for the party in power
• D) the savings rate, the trade deficit, and the unemployment rate of single mothers

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Definitions:

Outliers

Observations in a dataset that are significantly different from the other data points, often indicating measurement error, variability in measurement, or a novel discovery.

Alternative Hypothesis

In statistics, the hypothesis that proposes there is a difference between two or more groups or variables, contrasted with the null hypothesis.

Two-sided Test

A statistical test designed to determine if there is a significant difference between a parameter and a specific value, in either direction.

One-sided Test

A statistical test in which the alternative hypothesis specifies a direction of the test statistic, either greater than or less than a certain range.