Unit 4 Jeopardy Questions

Topic : correlation

Question: what is the difference between correlation and simple linear regression ?

• correlation analysis doesn't predict anything, but linear regression can give you a prediction

• linear regression does not predict anything, but correlation can give you a prediction

• they can give you the same information

Topic: Correlation/ Relationship

Question: Does this graph have positive, negative or no correlation?

• positive

• negative

• no correlation

Based on this graph, are kids more likely to have energy than adults?

• Yes

• No

• Cannot be determined

Category: Linear data/ correlation

Is the data in the graph linear?

• yes

• no

• cannot be determined

Topic Residuals:

What do positive residuals show in a linear regression model?

• The actual data is the same as the predicted value

• The actual data is lower than the predicted value

• The actual data is higher than the predicted value

• cannot be determined

Topic: Correlation

What is the correlation of a scatter plot where the variable on the x-axis consistently increases along with the variable on the y-axis?

• positive

• negative

• no correlation

• cannot be determined

Topic - Finding Exact Least Squares Regression Line

Question - What is the least squares regression line of the following data?

• y = 9.21 x -0.39

• y = -0.93x + 1.29

• y = 1.29 x -0.93

• y = -0.39 x + 9.21

Topic : Correlation

Question : The students read 100-500 books then after, their teacher asked them to rate it 1 through 4 . Is this a postitive or negative correlation ?

• positive

• negative

• no correlation

• cannot be determined

Topic: correlation

What is Positive Correlation?

• there is no association between the variables

• tendency for a high value of one variable to be associated with a low value of the second

• tendency for a high value of one variable to be associated with a high value of the second

Category: Approximating Trendline Equations

The least squares regression line is also called something else what is it?

• the line of correlation

• the line of trend

• the line of best fit

• the line of squares