Measure average items and value per basket, and the effect of adding one more item.
The arithmetic mean divides the total by the count. It is the right summary when values are roughly symmetric; when a few large values dominate, prefer the median. The basket size per transaction is the unit that makes totals comparable between periods of different size.
Basket Size
Average Basket Size = Total units sold ÷ Number of transactions
Average Basket Size = Total units sold ÷ Number of transactions The arithmetic mean divides the total by the count. It is the right summary when values are roughly symmetric; when a few large values dominate, prefer the median.
The basket size per transaction is the unit that makes totals comparable between periods of different size.
This calculator takes 2 inputs: Total units sold, Number of transactions. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.