Illinois Agility Test Calculator

How it is calculated

The tool compares your time with one built-in norm and reads your position off a bell curve:

z = (17.0 − time) / 1.5

percentile = normal CDF(z) × 100

Time is in seconds, the reference mean is 17.0 s and the standard deviation is 1.5 s, which the tool describes as an adult male norm. The z-score is flipped (norm minus your time) because a faster time is better, so a time of exactly 17.0 s gives the 50th percentile and each 1.5 s faster moves you about one standard deviation up. The tool has no separate norms by age or sex, no rating category, and it accepts any time above zero, so results for very short or very long times mean nothing. The test itself needs the standard cone course, run once from a lying start.

Common mistakes

• Entering minutes and seconds as 0.17 or 1,6 (for 17 or 16 seconds). The field takes total seconds as a decimal, so 16.5 means 16 and a half seconds.
• Reading a high percentile as a bad result. For this test a lower time is better, and the percentile has already been flipped so that higher is better.
• Comparing a woman's or a teenager's time to this norm without care. The tool uses one adult male reference only, so the percentile for other groups is only a rough guide.
• Using a non-standard course (different cone distances, a different start or a tiled floor versus grass). Only the standard layout can be compared with the norm.
• Entering the best of many attempts with long rests and comparing it with a single timed attempt. Hand timing also adds a few tenths of a second of error.