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1 Instructions This exercise is worth a total of 2 points. I have simulated some data: x and y. The scatterplot is given in Figure

1

Instructions This exercise is worth a total of 2 points. I have simulated some data: x and y. The scatterplot is given in Figure 2 (which I have turned sideways to fit nicely into the page). Draw a regression line that you think best represents the data. First, print out Figure 2 and physically draw a regression lines through it. Alternatively, you can use the jpg of Figure 2 that I have also given you and use some drawing software such as Microsoft Paint. Then after you have drawn the regression line, estimate the parameters of this line. Show your work. Give your calculations. If you printed out the picture, then take a photo of it and paste it to the document that you turn in. Or if you drew the regression line digitally, then copy and paste the word picture into your word docuement. Make sure your calculations match the lines that you drew in the picture. If you do not remember what the parameters are, you can refer to Lab Notes 7. But just quickly, the regression line is y = + x. Thus, the parameters here is the slope and is the intercept (we will often refer to as a constant or intercept). This is the exact thing you learned in high school algebra about the equation of the line: y = mx + b. Here, m is the slope and b is the intercept. Write the answers in a very neat and organized way. You will get very little if any points if I cannot read or are very confused by your answers. One way to go about this is to work out the problem on some scratch paper and then write up your answers in a final document. Furthermore, be sure to estimate the intercept visually, not algebraically.

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