[Glossary](/glossary.md)/[Ratings](/glossary/category/ratings.md)

# Expected values

The per-vehicle server averages a rating measures a player against: what a typical player produces in that exact tank.

Also known as expected damage, expected tank values, wn8 expected values.

Every per-vehicle rating needs a baseline. Expected values are that baseline, one row per vehicle giving the [average damage](/glossary/dpg.md), [frags](/glossary/kills-per-battle.md), [spotting](/glossary/spotting.md) and defence the server produces in it. A player's own numbers are divided by these to get the ratios the rating formula runs on.

The tables are maintained by the community, not by Wargaming, and are recomputed periodically from a large sample of accounts. Between two releases the vehicle roster keeps moving: new premiums and [reward vehicles](/glossary/reward-tank.md) have no row yet, so a rating either skips them or falls back to the average of comparable vehicles at the same [tier](/glossary/tier.md) and class.

A dataset update quietly moves everyone's rating. If a vehicle is buffed and the server starts doing more damage in it, the expectation rises and the same performance scores lower next time. This is intended: the rating measures a player against the current server, not against a frozen one.

## Related terms

[WN8A community performance rating that scores a player against the damage, kills, spotting and base defence expected of the vehicles they actually play, with a win rate term on top.](/glossary/wn8.md)[WNXA modern per-vehicle rating that counts assistance damage alongside damage dealt and drops the win rate term entirely.](/glossary/wnx.md)[WN7The 2012 predecessor to WN8, computed from account averages and the player's average tier instead of per-vehicle expected values.](/glossary/wn7.md)

[Every World of Tanks term](/glossary.md)

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