1.
A sample of customers in a grocery store were asked the amountthey spent at the grocery store and the number of household membersfor whom they currently shopped. The results are summarized in thetable below:
Number of Household Members (x) | Dollar Amount Spent on Groceries (y) |
5 | 135 |
2 | 49 |
2 | 50 |
1 | 37 |
4 | 91 |
3 | 68 |
5 | 133 |
3 | 60 |
Find the correlation coefficient for the number of householdmembers versus the dollar amount spent on groceries and round thisresult to the hundredths place.
2.
Given a trendline of y = 5987x + 143960, where the variable xrepresents the age of a home (in years) and the variable yrepresents its current market value (in dollars), use thistrendline to predict the current market value of an 8-year oldhome. Â
| | $191,856.00 |
| | $1,151,680.00 |
| | $53,883.00 |
| | $1,157,667.00 |
| | $1,199,576.00 |
