
Concept explainers
The following are advertised sale prices of color televisions at Anderson’s.
Size (inches) | Sale Price ($) |
9 | 147 |
20 | 197 |
27 | 297 |
31 | 447 |
35 | 1177 |
40 | 2177 |
60 | 2497 |
Table 12.33a. Decide which variable should be the independent variable and which should be the dependent variable.
b. Draw a
c. Does it appear from inspection that there is a relationship between the variables? Why or why not?
d. Calculate the least-squares line. Put the equation in the form of:
e. Find the
f. Find the estimated sale price for a 32 inch television. Find the cost for a 50 inch television.
g. Does it appear that a line is the best way to fit the data? Why or why not?
h. Are there any outliers in the data?
i. What is the slope of the least-squares (best-fit) line? Interpret the slope.

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Chapter 12 Solutions
Introductory Statistics
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