When a road runner runs a route a common goal of runners is to run a negative split. A negative split means to run the second half of the route faster than the first half. I often run to Nett bridge and back, or down to Lidakida beach and back. On these "out-and-back" runs I usually push for a negative split. Sometimes I do not get a negative split, and the time differences are always small. Both routes are tough to negative split, the outbound is downhill and the inbound return is uphill. Do the seven runs below indicate that I am statistically significantly faster on the inbound return than on the outbound run?
Route | Outbound time (min) | Inbound time (min) | Diff |
---|---|---|---|
Nett Bridge | 22.25 | 20.38 | -1.87 |
Nett Bridge | 22.97 | 21.12 | -1.85 |
Lidakida | 16.97 | 16.05 | -0.92 |
Lidakida | 20.32 | 19.43 | -0.89 |
Nett Bridge | 22.67 | 22.13 | -0.54 |
Lidakida | 16.12 | 15.87 | -0.25 |
Nett Bridge | 26.75 | 27.25 | 0.5 |
1. | Sample size n | ||
2. | Sample mean x | ||
3. | Standard deviation sx | ||
4. | Standard error SE | ||
5. | t-critical for alpha α = 0.05 | ||
6. | Margin of error E | ||
7. | Lower bound ci | ||
8. | Upper bound ci | ||
9. | p-value from t-test for paired data | ||
10. | maximum confidence level c |