Lesson 1.11- Regression Line
Title: Diamonds are forever.........and costly!
The table gives the price (in dollars) and weight (in carats) for 12 randomly selected round, clear, internally
flawless diamonds with excellent cuts.
Carat
0.50
1.21
1.74
0.31
1.51
1.04
Price ($)
4070
30.315
57.282
1404
45.928
24.679
Carat
1.20
1.10
1.08
161
1.13
Price (5)
24.855
25.127
24.026
47.126
32.315
25.075
a) Determine the explanatory and response variables from the table, then use the data above to create a
scatterplot of the data. Ensure you have the labels for the axes.
b) Describe the relationship shown in the scatterplot. Be sure to include all four characteristics of a scatterplot
in your description.
