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This is problem number eight.
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We are given a set of data and are tasked to perform a regression analysis on it.
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Firstly, we will draw the scatter diagram and then select two points from this diagram to create an arbitrary regression line.
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Next, we will find the true least squares regression line.
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To do this, we will use our five key points shown here.
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We do this by, we acquire these from our data set and use them in these two equations, which are derived from our original equations in the text in order to find our regression equation.
00:35
So we have the sum of our x values is 35, the sum of our y values is 20, some of the products x times y is 184, the sum of the squares of x are 285, and the sum of the squares of y is 130.
00:55
So, using these, additionally we can find our r value using a previous equation comes out to 0 .94, which means we have a positive and tightly packed linear correlation...