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  3. 1. a sample of customers in a grocery store were a

1. A sample of customers in a grocery store were asked the amount they spent at the...

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Question

Statistics

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.

-0.53

-0.23

0.17

0.47

0.96

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.  

$191,856.00

$1,151,680.00

$53,883.00

$1,157,667.00

$1,199,576.00

Answer & Explanation Solved by verified expert
3.8 Ratings (645 Votes)
Solution Question 1 The formula for correlation coefficient is given as below Correlation coefficient r nxy xysqrtnx2 x2ny2 y2 The    See Answer
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