Run chart
Plot one measure over time and see whether it has really moved, or is only going up and down by chance.
Your data stays in this browser. Close the tab and it is gone, unless you save a file. Visits are counted without cookies; nothing you type is sent.
STEP 1
Your data, in time order
Excel (.xlsx), CSV, or a file saved from this tool.
#
Date or period
Value
Note (optional)
1
2
3
4
5
6
7
8
9
10
At least 10 points; the rules for real change need 10 or more. Up to 100. A note puts a marker on the chart, so the chart shows when a change was made.
STEP 2
Options
The chart uses the median and three plain rules: a shift, a trend and too few runs. Each signal is explained in words.