Refer to the following data. The table below shows the size of some different di
ID: 3430279 • Letter: R
Question
Refer to the following data. The table below shows the size of some different diamonds and their costs in U.S. dollars.
Size (in carats) Cost (in US $)
.12 495
.17 768
.20 1105
.25 1509
.28 1996
.33 2097
.35 2409
1. Find the equation of the LSR line to predict cost from size.
y = 7244.184x - 322.587
y = 8460.729x - 572.034
y = 9021.362x - 698.923
y = 9946.271x - 403.002
2. Find the correlation
.924
.961
.978
.989
y = 7244.184x - 322.587
y = 8460.729x - 572.034
y = 9021.362x - 698.923
y = 9946.271x - 403.002
Explanation / Answer
Excel used for analysis
Regression Analysis
r
Regression Analysis
r