By plugging in x=165 into the regression line equation, we can find y:
y = 0.675(165) - 107.982
y = 111.375 - 107.982
y = 3.393
Rounding to the nearest integer, a person 165 centimeters tall would be predicted to own approximately 3 T-shirts.
Read the following description of a data set.
A European apparel company wants to know how many T-shirts it should make in each size. The company hired a telephone survey firm to contact members of its target demographic.
The survey recorded the height of each person (in centimeters), x, and the number of T-shirts he or she owned, y.
The least squares regression line of this data set is:
y=0.675x–107.982
How many T-shirts does this line predict a person 165 centimeters tall would own?
Round your answer to the nearest integer.
1 answer