Mouse
reference curve only
- Median
- 8 digits
- Mean
- 8 digits
Number Memory Test ยท population data
Number Memory Test Statistics
Every first attempt recorded on this test, split by input device. First attempts only, because practice moves the curve.
These curves are a fitted baseline plus 1 first attempt recorded here. The baseline is a curve, not a sample, so none of it is a real person and the counts below say so. Baseline is an estimate: centred on the classic seven plus or minus two digit span, nudged up for a self selected audience. No published dataset was found for it. Per-device offsets are extrapolated, not measured. The baseline is dropped once a device class holds 5,000 real first attempts.
- Sample
- 1 first attempt
- Last result
- 2026-09-27
- Page generated
- 2026-10-11
Trackpad
reference curve only
- Median
- 8 digits
- Mean
- 8 digits
Touchscreen
1 result + baseline
- Median
- 8 digits
- Mean
- 8 digits
Percentile breakdown
Read a row as: to reach this percentile you need this score or better. The gap between the 50th and the 75th is usually far smaller than the gap between the 95th and the 99th, which is why small improvements move you a long way in the middle and almost nowhere at the top.
| Percentile | Mouse | Trackpad | Touchscreen |
|---|---|---|---|
| 10th | 5 | 5 | 5 |
| 25th | 7 | 7 | 6 |
| 50th | 8 | 8 | 8 |
| 75th | 10 | 10 | 9 |
| 90th | 11 | 11 | 11 |
| 95th | 12 | 12 | 12 |
| 99th | 14 | 14 | 13 |
Citing this page
Not yet. This page holds 1 real first attempt and offers no citation format until it passes 200. Below that the curves are mostly the fitted baseline, and a quotable median would be a quotable guess. The methodology page explains what the baseline is.
Take the number memory test to place yourself on these curves.