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Chapter 12: Q.42 (page 718)

Plot the two given points on the following graph. Then, connect the two points to form the regression line.

Short Answer

Expert verified

The graph:

Step by step solution

01

Given Information

Points:

X Y
1985 2552
1990 34275
02

Explanation

The Regression Line is the line that best fits the data, with the smallest overall distance between it and the points drawn on a graph. In other terms, a regression line is a line that is used to reduce the squared deviations of forecasts.

To plot the graph for two points:

X Y
1985 2552
1990 34275

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Most popular questions from this chapter

A vacation resort rents SCUBA equipment to certified divers. The resort charges an up-front fee of \(25and another fee of \)12.50 an hour.

Find the equation that expresses the total fee in terms of the number of hours the equipment is rented.

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 scatter plot appear linear? Strong or weak? Positive or negative?

Use the following information to answer the next five exercises. A random sample of ten professional athletes produced the following data where xis the number of endorsements the player has and yis the amount of money made (in millions of dollars).

x
y
x
y
0
2
5
12
3
8
4
9
2
7
3
9
1
3
0
3
5
13
4
10

Draw a scatter plot of the data

Solve.

a. Whenx=1985,欧=_____

b. When x=1990,欧=_____

c. When x=1970,欧=______ Why doesn鈥檛 this answer make sense
See all solutions

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