Base Difficulty

Base difficulty: Level 1213 edit

Level distribution for noun (performance_technique): 405: 9 1200: 9 1201: 7 1203: 7 1204: 6 1206: 3 1207: 2 1209: 5 1210: 6 1212: 3 1213: 6 1216: 12 1219: 6 1220: 1 1221: 3 1222: 10 1224: 6 1225: 4

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
basic_english Extended (2 of 2) 1600
cefr B1 (3 of 6) 4200

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 11.76 5570 100% 5570 1
20th_books 15.60 4386 100% 4386 1
wiki_math 191.93 695 100% 695 1
wiki_geography 53.13 2358 100% 2358 1
wiki_biology 95.23 1456 100% 1456 1
wiki_modern_life 181.52 727 100% 727 1
wiki_arts 116.34 1133 100% 1133 1
wiki_society 77.05 1753 100% 1753 1
wiki_linguistics 153.82 816 100% 816 1
wiki_physical_science 174.72 819 100% 819 1
wiki_history 43.99 2854 100% 2854 1
early_modern_science 118.53 949 100% 949 1
religious_translated 14.77 4817 100% 4817 1
cooking 61.18 1563 100% 1563 1
legal_scotus 43.93 2541 100% 2541 1
eu_parliament_debates 22.18 3335 100% 3335 1
openstax_science 135.23 1046 100% 1046 1
openstax_society 107.14 1302 100% 1302 1
wpa_life_histories 13.95 4736 100% 4736 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.