A. Data Used:
1930: $7145
1940: $3920
1950: $14500
1960: $18500
1970: $23400
1980: $68714
1990: $123000
B. r= .95
C. y=(867.36)(1.05)^x
D. For every 10 years the cost goes up 1.05. The cost started at 867.36.
The graph shows how the housing prices have increased and how drastically they did. Houses used to be way cheaper then they are now, many reasons could've effected this.
E. Its important to be able to understand regression graphs and scatterplots because it shows you the relationship between y and x and how one effects the other. It also tells you if its linear or exponential.
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