Table 3.
Significance of pairwise sample t-test (lower triangle) and Spearman rank correlations (upper triangle) between vehicle speedometer (Car), Racelogic and Leica.
| All Condition | |||||
|---|---|---|---|---|---|
|
| |||||
| Spearman Rank p(t-test) | Car | RACELOGIC | LEICA | ABS (Car-RACELOGIC) | ABS (Car-LEICA) |
| Car | 0.99 | 0.99 | −0.22 | 0.52 | |
| RACELOGIC | 0.00 | 0.98 | −0.20 | 0.51 | |
| LEICA | 0.00 | 0.00 | −0.23 | 0.55 | |
| ABS(Car-RACELOGIC) | 0.33 | ||||
| ABS(Car-GNSS1) | 0.00 | ||||
|
| |||||
| Acceleration = 0 | |||||
|
| |||||
| Spearman Rank p(t-test) | Car | RACELOGIC | LEICA | ABS (Car-RACELOGIC) | ABS (Car-LEICA) |
|
| |||||
| Car | 0.84 | 0.79 | −0.42 | 0.64 | |
| RACELOGIC | 0.00 | 0.63 | −0.02 * | 0.50 | |
| LEICA | 0.92 * | 0.00 | −0.39 | 0.64 | |
| ABS (Car-RACELOGIC) | −0.23 | ||||
| ABS(Car-GNSS1) | 0.00 | ||||
|
| |||||
| Acceleration > 0 | |||||
|
| |||||
| Spearman Rank p(t-test) | Car | RACELOGIC | LEICA | ABS (Car-RACELOGIC) | ABS (Car-LEICA) |
|
| |||||
| Car | 1.00 | 1.00 | 0.18 | 0.23 | |
| RACELOGIC | 0.00 | 1.00 | 0.17 | 0.23 | |
| LEICA | 0.00 | 0.00 | 0.18 | 0.23 | |
| ABS (Car-RACELOGIC) | 0.82 | ||||
| ABS(Car-GNSS1) | 0.00 | ||||
|
| |||||
| Acceleration < 0 | |||||
|
| |||||
| Spearman Rank p(t-test) | Car | RACELOGIC | LEICA | ABS (Car-RACELOGIC) | ABS (Car-LEICA) |
|
| |||||
| Car | 1.00 | 1.00 | −0.33 | −0.08 * | |
| RACELOGIC | 0.00 | 1.00 | −0.33 | −0.09 * | |
| LEICA | 0.00 | 0.00 | −0.33 | −0.09 * | |
| ABS (Car-RACELOGIC) | 0.27 | ||||
| ABS(Car-GNSS1) | 0.00 | ||||
*
non-significant correlation or t-test