According to Figure 12

question 52

Multiple Choice

According to Figure 12.6, by age 85 and over, about ________ of females are widowed, compared to about ________ of males who are widowed.

• A)one-half; almost one-quarter
• B)three-quarters; a little over one-third
• C)90 percent; nearly one-half
• D)95 percent; nearly one-third
• E)three-quarters; a little over one-half

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Definitions:

Simple Linear Regression

Simple linear regression is a method for predicting a quantitative outcome using a single explanatory variable, based on the linear relationship between them.

Least Squares

A method in statistics for approximating the solution of overdetermined systems, by minimizing the differences between the observed and predicted values.

Simple Linear Regression

A statistical method used to model the relationship between a single independent variable and a dependent variable by fitting a linear equation to observed data.

Normally Distributed

A statistical distribution that is symmetrical about the mean, where most observations cluster around the central peak and the probabilities for values further away from the mean taper off equally in both directions.