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Practice Questions
Interpreting the Regression Line Practice Questions
Use the dataset above to answer the following questions.
1. According to the regression line above and in the video, what is the predicted change in a professor’s teacher evaluation score if a professor increased his beauty from a score of 4 to a score of 8?
*
a. -2.4
b. -.8
c. -.4
d. .4
e. .8
f. 2.4
2. According to the regression line above and in the video, what is the predicted change in a professor’s teacher evaluation score if the professor went from a beauty score of a perfect 10 to a score of 7?
*
a. -1
b. -.6
c. -.2
d. .2
e. .6
f. 1
3. According to the dataset above and in the video, which of the labeled data points is closest to the regression line's predicted value?
*
a. 5.667, 8.2
b. 7.167, 8.875
c. 8.167, 6.175
4. In the dataset featured above and in the video, the response variable is ________________.
*
a. The slope.
b. The y-intercept.
c. The student evaluation score.
d. The beauty score.
e. None of the above.
5. According to this video, a professor’s beauty ____________ her student evaluation scores.
*
a. Is positively correlated with
b. Is negatively correlated with
c. Causes
d. A and C only.
e. B and C only.
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Understanding Data
Course
(9 videos)
Introduction
Introduction to Understanding Data
Linear Regression
Intro to Linear Regression
Practice Questions
Interpreting the Regression Line
Practice Questions
Outliers
Practice Questions
(Coming Soon) Standard Error, T-statistic, Statistical Significance
(Coming Soon) P-Value
(Coming Soon) R Squared
(Coming Soon) Improving Your Regression Model
(Coming Soon) Linear Regression: Common Pitfalls
