Base Difficulty

Base difficulty: Level 22 edit

Level distribution for verb (change): 22: 4 28: 1 109: 1 140: 1 162: 2 194: 1 254: 1 255: 1 309: 2 311: 1 321: 16 410: 2 415: 2 475: 5 1040: 1 1090: 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 153.72 258 20% 653 downrated 2
20th_books 148.69 257 20% 699 downrated 2
wiki_math 40.04 668 20% 3340 downrated 1
wiki_geography 232.19 195 20% 501 downrated 2
wiki_biology 68.17 339 20% 1695 downrated 1
wiki_modern_life 167.61 162 20% 631 downrated 2
wiki_arts 184.82 173 20% 595 downrated 2
wiki_society 137.47 269 20% 849 downrated 2
wiki_linguistics 137.99 230 20% 832 downrated 2
wiki_physical_science 67.35 399 20% 1995 downrated 1
wiki_history 360.49 149 20% 278 downrated 2
early_modern_science 92.39 224 20% 1120 downrated 1
religious_translated 145.83 215 20% 777 downrated 2
cooking 50.11 555 20% 2775 downrated 1
legal_scotus 52.00 742 20% 2100 downrated 2
eu_parliament_debates 153.36 228 20% 686 downrated 3
openstax_science 91.55 236 20% 1180 downrated 1
openstax_society 198.52 228 20% 632 downrated 2
wpa_life_histories 323.21 109 20% 407 downrated 2

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.