Well this is really small print but it’s an absolute joy for an amateur statistics geek. These are all extensions of the five point summary (minimum, lower quartile, median, upper quartile and maximum to save you clicking through!)
Details #
There are three seven point summaries!
OK, I admit I made up that last name: it’s just that it’s the only one of the three that doesn’t seem to have had an inventor and hence not to carry someone’s name.
They are three genuinely interestingly different descriptors of distributions but this is very small print and I have never seen any of them used in reports or papers in our arenas.
Try also #
- Bowley’s seven point summary
- Distribution
- Five point summary
- Percentiles
- Quantiles
- Quartiles
- “The” seven point summary
- Tukey’s seven-point summary
Chapters #
Not covered in the OMbook.
Online resources #
One of my shiny apps: ECDF plot with quantiles and CIs for quantiles is pertinent in the unlikely event that you ever want to get any of these seven point splits of your data with their confidence intervals!
Dates #
First created 10.iv.25, updated 3.v.25 with link to the three seven point summaries.
