The calculation is simple. The context matters.
A three-dart average is credited points divided by counted darts, multiplied by three. If you score 600 points in 30 practice darts, your average is 60.00. It is not the average of your highest visits, and it does not ignore misses. A zero-scoring visit still contributes three darts.
In this scorer, an X01 bust credits zero points and counts a three-dart visit. A valid checkout counts only the darts used to finish. If you close a leg with your first dart, confirming one dart matters: counting three would lower your recorded average. Different scoring systems can use different bust conventions, so check before comparing their numbers.
Compare like with like
Scoring practice lets you aim at high numbers for every dart. In double-out 501 you eventually spend darts on small finishes. A practice average and a match average describe different tasks. Filter your history by mode before drawing conclusions, and use the same number of practice rounds when tracking a routine. The 20-versus-19 comparison shows how to use equal practice blocks to choose a scoring target.
An overall average should weight every dart equally. Averaging a short session’s average with a long session’s average gives the short session too much influence. DartsRound totals credited points and darts across completed X01 and scoring-practice games. Cricket and Around the Clock do not contribute to this number.
Use the number to choose the next session
A rising scoring average with repeated struggles to finish suggests doubles practice may help more than another session at T20. A high checkout is encouraging, but one finish does not establish consistency. Review several recent matches and look at wins, darts used and finishes together.
Keep your player profile consistent so the history follows the same person. A shared device can have several local player profiles; choose yours in statistics. As your history grows, compare recent results with your earlier games.