Homework SourseSo I dont know how to do this problem with R or Minitab even
So I don\'t know how to do this problem with R or Minitab (even manual is okay, but not the SAS software). Can anyone help me?
and If you are using R or Minitab, can you please give me explanation or code, or direction. Please.
Thank you.
Solution
Y = 29.55786 -1.67116 x1
a) From the column graph it is observe that change in the blood pressure is highest during Group 1 i.e when person is on healthy diet and exercise. Thus it can be effectively used to reduced pressure.
b) Yes exercise and diet can be an effective alternative to medicine.
We have used regression model to fit the data.
values have been calculated using excel.
| change in blood pressure | group | BMI | SUMMARY OUTPUT | |||||||||||
| -32 | 1 | 27.3 | ||||||||||||
| -21 | 1 | 22.1 | Regression Statistics | |||||||||||
| -26 | 1 | 26.1 | Multiple R | 0.370405 | ||||||||||
| -16 | 1 | 27.8 | R Square | 0.1372 | ||||||||||
| -11 | 2 | 19.2 | Adjusted R Square | 0.05092 | ||||||||||
| -19 | 2 | 26.1 | Standard Error | 12.84032 | ||||||||||
| -23 | 2 | 28.6 | Observations | 12 | ||||||||||
| -5 | 2 | 23 | ||||||||||||
| -6 | 3 | 28.1 | ANOVA | |||||||||||
| 5 | 3 | 25.3 | df | SS | MS | F | Significance F | |||||||
| -11 | 3 | 26.7 | Regression | 1 | 262.1778 | 262.1778 | 1.590172 | 0.235927 | ||||||
| 14 | 3 | 22.3 | Residual | 10 | 1648.739 | 164.8739 | ||||||||
| Total | 11 | 1910.917 | ||||||||||||
| Coefficients | Standard Error | t Stat | P-value | Lower 95% | Upper 95% | Lower 95.0% | Upper 95.0% | |||||||
| Intercept | 29.55786 | 33.62327 | 0.879089 | 0.399984 | -45.3595 | 104.4752 | -45.3595 | 104.4752 | ||||||
| BMI | -1.67116 | 1.325248 | -1.26102 | 0.235927 | -4.624 | 1.281672 | -4.624 | 1.281672 | ||||||
| Let the regression line be : | ||||||||||||||
| Y = b0 + b1 x1 | ||||||||||||||
| Here b0 = 29.55786 ; b1 = -1.67116 | ||||||||||||||
| Therefore our regression line equation is, | ||||||||||||||
| Y = 29.55786 -1.67116 x1 a) From the column graph it is observe that change in the blood pressure is highest during Group 1 i.e when person is on healthy diet and exercise. Thus it can be effectively used to reduced pressure. b) Yes exercise and diet can be an effective alternative to medicine. We have used regression model to fit the data. values have been calculated using excel. |
