Find the equation of the regression line for the given data. Then construct a scatter plot of the data and draw the regression line. (The pair of variables have a significant correlation.) Then use the regression equation to predict the value of y for each of the given x-values, if meaningful. The number of hours 6 students spent for a test and their scores on that test are shown below.
font size decreased by 1 font size increased by 1 Hours spent studying comma xHours spent studying, x |
11 |
22 |
22 |
33 |
55 |
66 |
|
(a)
xequals=22 hours |
(b)
xequals=2.52.5 hours |
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Test score, y |
3939 |
4343 |
5151 |
4949 |
6262 |
6868 |
(c)
xequals=1212 hours |
(d)
xequals=4.54.5 hours |
Find the regression equation.
ModifyingAbove y with caretyequals=nothing xplus+left parenthesis nothing right parenthesis
(Round the slope to three decimal places as needed. Round the y-intercept to two decimal places as needed.)
The statistical software output for this problem is:
Hence,
y = 5.714x + 32
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