For a sample of students, their total SAT scores and college grade point averages (GPAs) are: SAT GPA 1070 3.50 1040 2.66 1120 3.54 1260 3.83 1100 2.60 1020 2.70 960 2.00 The least‑squares regression line equation of GPA on SAT score is:

The datasetBody.xlsgives the percent of weight made up of body fat for 100 men as well as other variables such as Age, Weight (lb), Height (in), and circumference (cm) measurements for the Neck, Chest, Abdomen, Ankle, Biceps, and Wrist. We are interested in predicting body fat based on abdomen circumference. Find the equation of the regression line relating to body fat and abdomen circumference. Make a scatter-plot with a regression line. What body fat percent does the line predict for a person with an abdomen circumference of 110 cm? One of the men in the study had an abdomen circumference of 92.4 cm and a body fat of 22.5 percent. Find the residual that corresponds to this observation. Bodyfat Abdomen 32.3 115.6 22.5 92.4 22 86 12.3 85.2 20.5 95.6 22.6 100 28.7 103.1 21.3 89.6 29.9 110.3 21.3 100.5 29.9 100.5 20.4 98.9 16.9 90.3 14.7 83.3 10.8 73.7 26.7 94.9 11.3 86.7 18.1 87.5 8.8 82.8 11.8 83.3 11 83.6 14.9 87 31.9 108.5 17.3…

The best predicted circumference for a diameter 1.2 cm is?

Using a sample of 46 college students, we want to determine if there is a significant correlation between weight (in lbs.) and weekly exercise (in minutes). The results of a correlation and regression analysis are indicated in the Excel output below. The mean weight (the independent variable) was 166.80 lbs., and the mean weekly exercise time (the dependent variable) was 158.83 minutes.         SUMMARY OUTPUT                           Regression Statistics           Multiple R 0.027082077           R Square 0.000733439           Adjusted R Square -0.021977165           Standard Error 79.41761298           Observations 46                         ANOVA               df SS MS F Significance F   Regression 1 203.6896 203.6896 0.032295 0.858207   Residual 44 277514.9 6307.157       Total 45 277718.6                         Coefficients Standard Error t Stat P-value Lower 95%…