WKS 11
______________, ______________: _________
Surname (e.g. “Straayer”), Given Name (e.g. “Dave”)
time class meets
Let’s consider the relationship between thumb size as
explanatory variable and wrist size as a potential
response variable.
Begin with a scatterplot. Sketch your calculator’s
scatter plot below, and label the axes appropriately:
What is the correlation? _______________
What is the coefficient of determination? _______________
What percentage of variation in wrist size can be explained by this model? __________%
y-hat = ____________*x + _______________ (show the regression equation)
Predict a wrist size for someone with a thumb of 66 mm. ____________________
Show your formula: _________________________________________
Is this (circle one) interpolation, extrapolation or solving?
Predict a wrist size for someone with a thumb of 150 mm. ____________________
Show your formula: _________________________________________
Is this (circle one) interpolation, extrapolation or solving?
Predict a thumb size for someone with a wrist of 166 mm. ____________________
Show your formula: _________________________________________
Is this (circle one) interpolation, extrapolation or solving?