Interpreting a Residual Worksheet with Answer Key

What's on the worksheet

1. Each cell gives two of the three numbers:
   y = 52,\ \hat{y} = 47y = 18.4,\ \hat{y} = 21.0\hat{y} = 64,\ \text{residual} = -7y = 9.5,\ \text{residual} = 1.5y = 120,\ \text{residual} = -15
2. A travel site lists the hotels in a beach town.
3. An orchard keeper weighed the apples picked from five trees of different ages (made-up data).
4. A bike shop fits the line y = 240 - 25x to its used bicycles, where x is the age in years and y is the selling price in dollars.
5. A print shop fits the line y = 0.5x + 6 to its poster jobs, where x is the number of posters and y is the printing time in minutes.
6. Priya weighed eight watermelons and fitted a line predicting the mass y in kilograms from the diameter x in centimeters.