Base Difficulty

Base difficulty: Level 10 edit

Level distribution for preposition (preposition_other): 6: 8 10: 7 11: 5 14: 1 18: 4 23: 2 226: 3 1080: 1 1120: 1

Per-Language Difficulty Overrides

No difficulty overrides set. The base difficulty level will be used for all languages.

Add Difficulty Override
-1 to exclude, 1-1299 for level
Frequency and Tier Signals
Combined Frequency Rank: — (run python -m storage.admin --calc-ranks to populate)
Tier Signals
Source Tier Rank used
cambridge_yle Starters (1 of 3) 325

Rank used = synthetic rank this tier contributes to the combined frequency rank (lower = more common).

Corpus Frequency
Corpus Freq (per M) Best form Share Zipf rank Forms
19th_books 315.92 279 80% 349 downrated 1
20th_books 382.29 245 80% 306 downrated 1
wiki_math 26.07 2621 80% 3276 downrated 1
wiki_geography 87.15 1186 80% 1482 downrated 1
wiki_biology 112.73 978 80% 1222 downrated 1
wiki_modern_life 120.79 903 80% 1129 downrated 1
wiki_arts 124.76 804 80% 1005 downrated 1
wiki_society 78.30 1396 80% 1745 downrated 1
wiki_linguistics 51.24 1821 80% 2276 downrated 1
wiki_physical_science 78.30 1468 80% 1835 downrated 1
wiki_history 121.81 795 80% 994 downrated 1
early_modern_science 123.70 709 80% 886 downrated 1
religious_translated 0.00 639 80% 799 downrated 0
cooking 0.00 — — — 0
legal_scotus 45.12 2055 80% 2569 downrated 1
eu_parliament_debates 0.00 845 80% 1056 downrated 1
openstax_science 0.00 — — — 0
openstax_society 98.68 1153 80% 1441 downrated 1
wpa_life_histories 153.92 556 80% 695 downrated 1

Best form = the single best-ranked form in the corpus, share-blind — how the spelling itself ranked. Share = how much of that spelling belongs to this lemma, when several senses compete for it. Zipf rank = all the forms combined (variant spellings included), each scaled by its share, and what feeds the combined frequency rank. Combining forms improves on the best form, but a share below 100% pushes the other way and usually wins: a sense holding a small slice of a common spelling is a rare word, so its rank lands downrated below the best form — and once it falls past what the corpus can support it is capped at the rank an unlisted word would get.