Chapter 12: Q.48 (page 719)
Graph 鈥測ear鈥 vs. 鈥# flu cases diagnosed.鈥 Do not include pre-1981. Label both axes with words. Scale both axes
Short Answer
The scatter plot:

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Chapter 12: Q.48 (page 719)
Graph 鈥測ear鈥 vs. 鈥# flu cases diagnosed.鈥 Do not include pre-1981. Label both axes with words. Scale both axes
The scatter plot:

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60. The following table shows the poverty rates and cell phone usage in the United States. Construct a scatter plot of the data
| Year | Poverty Rate | Cellular Usage per Capita |
| 2003 | 12.7 | 54.67 |
| 2005 | 12.6 | 74.19 |
| 2007 | 12 | 84.86 |
| 2009 | 12 | 90.82 |
The price of a single issue of stock can fluctuate throughout the day. A linear equation that represents the price of stock for Shipment Express is where x is the number of hours passed in an eight-hour day of trading.
What are the slope and y-intercept? Interpret their meaning.
Table 12.20 shows the life expectancy for an individual born in the United States in certain years.

a. Decide which variable should be the independent variable and which should be the dependent variable.
b. Draw a scatter plot of the ordered pairs.
c. Calculate the least squares line. Put the equation in the form of: \(\hat{y}=a+bx\)
Does the line seem to fit the data? Why or why not?
61. Does the higher cost of tuition translate into higher-paying jobs? The table lists the top ten colleges based on mid-career salary and the associated yearly tuition costs. Construct a scatter plot of the data.
| School | Mid-Career Salary( in thousands) | Yearly Tuition |
| Princeton | 137 | 28,540 |
| Harvey Mudd | 135 | 40,133 |
| CalTech | 127 | 39,900 |
| US Naval Academy | 122 | 0 |
| West Point | 120 | 0 |
| MIT | 118 | 42,050 |
| Lehigh University | 118 | 43,220 |
| NYU-Poly | 117 | 39,565 |
| Babson College | 117 | 40,400 |
| Stanford | 114 | 54,506 |
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