Final Review

Front

What is the percent of females among the respondents in the National Survey of Adolescent Health?

Back

About 54%.

Front

What happens to the slope of the regression line when an influential point is removed?

Back

The slope will decrease.

Front

Is a linear regression model appropriate if the residual plot shows no pattern?

Back

Yes.

Front

What type of data is represented by the growth of a plant over the next 30 days?

Back

Continuous.

Front

Back

15.5.

Front

Define 'residual' in the context of regression analysis.

Back

The difference between the observed value and the predicted value.

Front

What does a residual plot indicate about the appropriateness of a linear model?

Back

It shows whether the residuals are randomly distributed, indicating a good fit.

Front

What is an influential point in a dataset?

Back

A data point that significantly affects the slope of the regression line.

Front

What is the purpose of a two-way table in statistics?

Back

To display the relationship between two categorical variables.

Front

How do you calculate the slope of a regression line?

Back