It's time to put what you've learned to the test, get 8 right to pass this week.
1.
Which of the following statements is true if there is a significant linear relationship between the explanatory variables and the target variable?
Choose the correct answer.
2.
Which of the following are assumptions for a standard linear regression model?
There are two correct answers.
3.
What is the null hypothesis?
There are two correct answers.
4.
How is the residual calculated?
Choose the correct answer.
5.
What is the estimated y-value if the slope = 10, the x-observation = 5, and the y-intercept = -6?
Choose the correct answer.
6.
Which correlation coefficients could you expect if two variables (X,Y) have a perfect linear relationship?
There are two correct answers.
7.
What does the term "multicollinearity" refer to?
Choose the correct answer.
8.
What are the two broad categories of application for a linear regression?
There are two correct answers.
9.
What is the slope value if the mean of the y-values = 25, the mean of the x-values = 10, and the y-intercept = 5?
Choose the correct answer.
10.
A scientist is testing if a new drug kills bacteria and discovers that the drug successfully kills the sample bacteria, while the control sample bacteria survive. What can the scientist conclude?