The table below shows the number of people living in a house and the weight (in pounds) at the curb just before trash pickup. People 2 3 6 1 7 1 3 1 2 4 Trash (Pounds) 18 33 93 23 83 26 37 20 22 45
The table below shows the number of people living in a house and the weight (in pounds) at the curb
just before trash pickup.
| People | 2 | 3 | 6 | 1 | 7 | 1 | 3 | 1 | 2 | 4 |
| Trash (Pounds) | 18 | 33 | 93 | 23 | 83 | 26 | 37 | 20 | 22 | 45 |
(a) Draw a scatterplot of the number of people in a house versus the weight of their trash.
(b) Describe the scatterplot. Note: You should include all topics we discussed in class.
(c) Can we use the
(d) Find the correlation coefficient, r. Is this value plausible for the given data set? What does it tell us about our data set?
(e) What is r2 and what does this value mean with respect to our data?
(f) Find the least squares regression line.
(g) What does the slope mean in the above context?
(h) If we have 5 people living in a house, what can we predict their trash to weigh before it is picked up? Is this an extrapolation? Justify your answer.
(i) If we have 85 people living in a house, what can we predict their trash to weigh before it is picked up? Is this an extrapolation? Justify your answer.
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