SOLUTION: please i am still not understanding this can someone please help me out on how to work this problem. The data below are the gestation periods, in months, of randomly selected

Question 327867: please i am still not understanding this can someone please help me out on how to work this problem.

The data below are the gestation periods, in months, of randomly selected animals and their corresponding life spans, in years.
Gestation, x 8 2.1 1.3 1 11.5 5.3 3.8 24.3
Life span, y 30 12 6 3 25 12 10 40
a. Find the equation of the regression line for the given data. Round the line values to the nearest two decimal places. (4 points) Show your work.

b. Using the equation found in part a, predict the life span when the gestation is 10 months. Round to the nearest absence.
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
a) Calculate the average of the x values=.
Calculate the average of the y values=.
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Then for each point,
Calculate the square of the x deviation:
Calculate the square of the x deviation:
Calculate the product of x and y deviation:
Sum each of those three as SSxx, SSyy, and SSxy respectively.
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Calculate , this is the slope of the regression line.
Calculate .

Calculate the intercept of the regression line using , , and

The equation for the regression line is then

EXCEL is great for this computation, you can also use the chart wizard to plot a scatterplot and add a trendline to your data.
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b)
years
I'm not sure what the nearest absence means.
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