7 Questions
Which of the following best describes a regression model?
A way of predicting the value of one variable from another using a linear equation
What does the equation of a straight line in a regression model represent?
The relationship between two variables
What does the intercept of the regression line represent?
The value of the dependent variable when the independent variable is zero
Which of the following is true about the bivariate regression model $Y_i = b_0 + b_iX_i + \epsilon_i$?
$b_0$ is the intercept
What does the slope of 2.6 in the regression model $Y = 120 + 2.6X$ indicate?
For every inch increase in height, weight increases by 2.6 pounds
What does the sum of squared error measure in the least squares method?
The variability between the regression model and the actual data
What does the lm() function in R stand for?
Linear model
Test your knowledge on advanced data analysis with this quiz on bivariate regressions. Learn about linear regression, assessing the fit of a regression model, and interpreting regression models using R.
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