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Practice Questions
Intro: Linear Regression Practice Questions
1. According to research cited in the video, we learned that there is a ______________________ between a teacher’s beauty score and her evaluation score.
*
a. Positive correlation.
b. Negative correlation.
c. No association.
2. If we plotted a teacher’s teaching ability against a teacher’s evaluation score in a scatterplot, what should we expect to observe?
*
a. A weak but positive correlation.
b. A strong positive correlation.
c. A weak but negative correlation.
d. A strong negative correlation.
e. No association.
3. To get a more accurate measure of the true relationship between a teacher’s beauty and her evaluation score, what other factors should you consider and test if possible?
*
a. Difficulty of the course.
b. Gender.
c. Native language of professor.
d. All of the above.
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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
