Explain why it does not make sense to interpret the y-intercept in Problem
Problem
Candy The following data represent the weight (in grams) of various candy bars and the corresponding number of calories
Candy Bar | Weight, x | Calories, y |
Hershey’s Milk Chocolate® | 44.28 | 230 |
Nestle’s Crunch® | 44.84 | 230 |
Butterfinger® | 61.30 | 270 |
Baby Ruth® | 66.45 | 280 |
Almond Joy® | 47.33 | 220 |
Twix® (with caramel) | 58.00 | 280 |
Snickers® | 61.12 | 280 |
Heath® | 39.52 | 210 |
Source Megan Pocius, student at Joliet Junior College
(a) Draw a scatter diagram of the data, treating weight as the independent variable. .
(b) What type of relation appears to exist between the weight of a candy bar and the number of calories? .
(c) Select two points and find a linear model that contains the points. .
(d) Graph the line on the scatter diagram drawn in part (a). .
(e) Use the linear model to predict the number of calories in a candy bar that weighs 62.3 grams. .
(f) Interpret the slope of the line found in part (c).
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