GUIDES · BETSLIP DOCTOR
What must match before comparing two participants' averages?
Before comparing two averages, verify that both measure the same thing in the same unit over compatible periods and cutoffs. Identify each season or appearance window and show the sample size behind each average. A total, per-appearance average, set average, or rate cannot be compared as if it were the same quantity. If the definitions or samples differ, explain the mismatch or use a documented conversion and preserve the original values.
For Bettors and cappers interpreting sports-record evidence · Updated
Match the metric and its unit
A label such as score, points, or attempts can hide different definitions. Confirm the exact statistic and unit for both participants. Do not compare a count per appearance with a rate per set, or an event total with an average, without clearly stating the distinction.
- Use the same statistic definition and unit.
- Name the period, season, and cutoff for each participant.
- Show the sample size and whether it counts completed appearances or contests.
Make the windows and denominators visible
Two values can both be called averages but use different seasons or numbers of appearances. Those differences affect what each value summarizes. Prefer aligned windows; when exact alignment is impossible, report each window and denominator separately rather than implying a controlled comparison.
Convert only with a defined, disclosed method
If a conversion is justified by the source definition, show the rule, unit, and original values so a reader can reproduce it. A conversion cannot repair missing observations or incompatible event definitions. If no reliable conversion exists, label the measures not directly comparable.
Hypothetical example: total versus average
Imagine a synthetic comparison where one participant has 30 generic score units across five completed appearances, while a second value is reported as 6 score units per appearance. The first is a total and the second is an average. Dividing the first by five yields 6 only if the unit definition and five-appearance denominator are verified and compatible. Without that match, keep the figures separate. These invented values do not describe real participants.
Related questions
Is it enough for both numbers to use the same unit?
No. The metric definition, period, cutoff, and sample denominator also need to be clear. The same unit alone does not make two different measures comparable.