(a) Draw the scatter-plot and then write the equation of the regression line that fits the best. (b) What is the value of the slope of the line? Interpret. (c) What is the y-intercept? Interpret.

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Can you guys explain and help me out with those questions, please?

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The following data chart shows the world record times for the 200 m race for flying
start machines ( a kind of bicycle)
Year
Record Time (seconds)
1974
10.4
1975
10.0
1976
9.4
1977
9.1
1979
8.8
1985
7.2
1986
6.8
1992
6.5
(a) Draw the scatter-plot and then write the equation of the regression line that fits
the best.
(b) What is the value of the slope of the line? Interpret.
(c) What is the y-intercept? Interpret.
d) What is R2? Interpret in the context of the problem.
e) Calculate the correlation. Interpret.
Transcribed Image Text:The following data chart shows the world record times for the 200 m race for flying start machines ( a kind of bicycle) Year Record Time (seconds) 1974 10.4 1975 10.0 1976 9.4 1977 9.1 1979 8.8 1985 7.2 1986 6.8 1992 6.5 (a) Draw the scatter-plot and then write the equation of the regression line that fits the best. (b) What is the value of the slope of the line? Interpret. (c) What is the y-intercept? Interpret. d) What is R2? Interpret in the context of the problem. e) Calculate the correlation. Interpret.
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