MS 150 Statistics
Age | Heart rate |
21 | 54 |
20 | 55 |
20 | 55 |
24 | 57 |
27 | 57 |
21 | 62 |
19 | 64 |
21 | 64 |
20 | 66 |
19 | 67 |
20 | 67 |
21 | 70 |
18 | 72 |
20 | 72 |
25 | 72 |
21 | 73 |
20 | 74 |
22 | 74 |
21 | 75 |
21 | 75 |
20 | 76 |
21 | 76 |
21 | 77 |
19 | 78 |
19 | 80 |
20 | 80 |
24 | 80 |
19 | 81 |
19 | 82 |
21 | 82 |
- _________ Calculate the sample size n.
- ______________ Calculate the slope of the linear regression trend line for the data.
- ______________ Calculate the y-intercept of the linear regression for the data.
- ______________ Is the relationship positive, negative, or neutral?
- ______________ Calculate the correlation coefficient r for the data.
- ______________ Is the correlation none, weak/low, moderate, strong/high, or perfect?
- ______________ Determine the coefficient of determination r².
- ______________ What percent in the variation in the age accounts for the variation in the heart rate?
- ______________ Use the slope and intercept to predict the heart rate for a 23 year old female.
- ______________ Use the slope and intercept to predict the age for a female with a heart rate of 60.
- ______________ Use the slope and intercept to predict the heart rate for a 3 year old female.
- ______________ Use the slope and intercept to predict the heart rate for a 83 year old female.
- ______________ Are the last two calculations valid?