Question

A realtor studies the relationship between the size of a house (in square feet) and the property taxes owed by the owner. He collects the following data on six homes in an affluent suburb 30 miles outside of Chicago. Use Table 2.

	Square Feet	Property Taxes ($)
Home 1	4,150	12,527
Home 2	2,780	9,263
Home 3	5,289	22,703
Home 4	2,123	6,450
Home 5	1,581	5,231
Home 6	3,023	7,850

a-1.	Construct a scatterplot.
	1. On the graph below, use the point tool (Square Feet 1) to plot the point to show Square Feet and Property Taxes.
	2. Repeat the same process for the plotter tools (Square Feet 2...,Square Feet 6).
	3. To enter exact coordinates, double click on the point and enter the exact co-ordinates of x and y.

a-2.	Interpret a scatterplot.
	The scatterplot indicates that there is a positive relationship between size of house and property taxes. The scatterplot indicates that there is a negative relationship between size of house and property taxes. The scatterplot indicates that there is no relationship between size of house and property taxes.

b-1.	Calculate sxy and rxy. (Do not round intermediate calculations. Round your answers to 2 decimal places.)

sxy
rxy

Answer 1

a 1)

a 2)

The scatterplot indicates that there is a positive relationship between size of house and property taxes.

b 1)