MS 150 Statistics Quiz 04.4 • • Name:
Treadmill data from Genesis fitness and health annex
distance (miles) | time (min) |
0 | 0 |
0.66 | 8 |
1.02 | 12 |
1.38 | 16 |
1.76 | 20 |
2.84 | 32 |
3.23 | 36 |
- _________ Calculate the sample size n (the number of data pairs).
- ______________ 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.
- ______________ What percent in the variation in the distance accounts for the variation in the time?
- ______________ Use the slope and intercept to predict the time for a distance of 2.48 miles.
- ______________ On September 05 I ran for 122 minutes. Use the slope and intercept to predict the distance for a time of 122 minutes.
- ______________ Can the trend line be extended to any distance, any time? Can it be used to calculate how far I will run in 48 hours (2880 minutes)?