The accompanying scatterplot shows the relationship between the age of an internet user and the amount of time spent browsing the internet per week (in minutes). The accompanying residual plot is also shown along with the QQ plot of the residuals. Choose the statement that best describes whether the condition for Normality of errors does or does not hold for the linear regression model. Choose the statement that best describes whether the condition for Normality of errors does or does not hold for the linear regression model. A.The residual plot displays a fan shape; therefore the Normality condition is not satisfied. B.The QQ plot mostly follows a straight line; therefore the Normality condition is satisfied. C.The scatterplot shows a negative trend; therefore the Normality condition is satisfied. D.The residual plot shows no trend; therefore the Normality condition is not satisfied.
Correlation
Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.
Linear Correlation
A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related.
Regression Analysis
Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as predictors. Regression analysis is one of the methods to find the trends in data. The independent variable used in Regression analysis is named Predictor variable. It offers data of an associated dependent variable regarding a particular outcome.
The accompanying
A.The residual plot displays a fan shape; therefore the Normality condition is not satisfied.
B.The QQ plot mostly follows a straight line; therefore the Normality condition is satisfied.
C.The scatterplot shows a negative trend; therefore the Normality condition is satisfied.
D.The residual plot shows no trend; therefore the Normality condition is not satisfied.
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