A Study Found Higher Rates of Crime in Cities with an International

question 10

Multiple Choice

A study found higher rates of crime in cities with an international airport, compared to cities without an international airport .But the study failed to take account of the size of the city (population) , and bigger cities tend both to have more crime and to have international airports .The findings of this study suffer from

• A)Measurement bias
• B)Omitted variable bias
• C)Sample selection bias
• D)All of the above

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Definitions:

ANOVA

A statistical method, Analysis of Variance, used to compare the means of three or more samples to understand if at least one sample mean significantly differs from the others.

Hypothesis

A supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.

Test For Equality

A statistical method used to determine if two or more groups have statistically significant differences in means.

Variances

Measures of how much a set of numbers is spread out from their average value, indicating distribution dispersion.