When We Want to Infer from a Sample to the Population

question 24

Multiple Choice

When we want to infer from a sample to the population, what assumption must be met?

• A) Sample is normally distributed
• B) Sample is large
• C) Population is normally distributed
• D) Population is large

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Definitions:

Standard Error Of Estimate

A measure of the accuracy of predictions made with a regression line, specifically, it estimates the standard deviation of the error term.

Coefficient Of Determination

A measure used in statistical analysis to assess the goodness of fit of a model, represented as the proportion of variance in the dependent variable that is predictable from the independent variable(s).

Pearson Correlation Coefficient

A measure of the linear correlation between two variables X and Y, giving a value between -1 and 1 which indicates the strength and direction of the correlation.

Sum Of Squares

A statistical measure that quantifies the variation within a set of numbers, calculated as the sum of the squared differences from the mean.