Regression Lines & Residuals

Extrapolation is the use of the regression line for prediction ________ of the interval of values used to obtain the line.

Tags

CCSS.HSS.ID.C.7

A residual is the difference between an ​ (a)   ​ value and it's ​ (b)   value.

• actual
• predicted
• x-value
• y-value

Tags

CCSS.8.EE.C.8C

What does it mean when a residual is negative?

• The actual value is more than the predicted value

• The actual value is equal to the predicted value

• The actual value is less than the predicted value

Tags

CCSS.HSF-LE.A.1C

• As more sugar is added, the less time the freshness of the flower lasts.

• If 1.5 tbs of sugar is added to the vase, the flower will stay fresh for 190 hours.

• Without any sugar, the flower will last for 178 hours.

• Every tablespoon of sugar allows the flower to last about 16 more hours.

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.7

After performing analyses on a set of data, Mrs. Schoeneck examined the scatter plot of the residual values for each analysis. Which scatter plot indicated the best linear fit for the data?

• A
• B
• C

Match the following

• weak negative correlation

• +0.31

• strong positive correlation

• +0.99

• weak positive correlation

• -0.44

• strong negative correlation

• -0.97