Base Difficulty

Base difficulty: Level 17 edit

Level distribution for adjective (quality): 3: 1 11: 10 14: 12 17: 23 18: 3 20: 4 318: 35 320: 28 330: 1 340: 2 360: 2 380: 1 400: 3 420: 4 430: 27 469: 27 1040: 2 1060: 2 1070: 13 1090: 3 1110: 2 1120: 47 1214: 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 Flyers (3 of 3) 1200

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 531.79 184 80% 230 downrated 1
20th_books 691.58 154 80% 192 downrated 1
wiki_math 630.33 170 80% 212 downrated 1
wiki_geography 165.58 576 80% 720 downrated 1
wiki_biology 153.01 683 80% 854 downrated 1
wiki_modern_life 202.88 460 80% 575 downrated 1
wiki_arts 167.52 576 80% 720 downrated 1
wiki_society 381.45 205 80% 256 downrated 1
wiki_linguistics 247.66 402 80% 503 downrated 1
wiki_physical_science 141.07 813 80% 1016 downrated 1
wiki_history 193.54 431 80% 539 downrated 1
early_modern_science 197.56 438 80% 548 downrated 1
religious_translated 348.13 265 80% 331 downrated 1
cooking 188.65 582 80% 728 downrated 1
legal_scotus 1004.09 80 80% 100 downrated 1
eu_parliament_debates 632.88 150 80% 187 downrated 1
openstax_science 377.16 226 80% 282 downrated 1
openstax_society 531.37 163 80% 204 downrated 1
wpa_life_histories 1010.26 113 80% 141 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.