Question Description
- The table shows the average cost, in dollars, of a movie ticket in the United States for different years.
|
1948 |
1963 |
1974 |
1978 |
1985 |
1991 |
1997 |
2005 |
2010 |
|
|
0.36 |
0.86 |
1.89 |
2.34 |
3.55 |
4.21 |
4.59 |
6.41 |
7.89 |
Use technology to answer the following:
- Find the equation of the least squares regression line. Round values of a and b to four decimal places.
- Find r. Round to three decimal places. Interpret the r-value.
- Find . Round to three decimal places. Tell what it means.
- Use the equation of the least squares regression line to predict the average cost of a movie ticket in 1995.
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