Base Difficulty

Base difficulty: Level 276 edit

Level distribution for noun (quantitative_concept): 20: 1 26: 1 162: 20 276: 22 380: 20 390: 1 456: 1 460: 1 1000: 1 1050: 2 1070: 2 1080: 5 1090: 1 1110: 1 1120: 1 1202: 2 1203: 1 1204: 2 1206: 1 1210: 2 1211: 1 1213: 7 1218: 1 1225: 2 1226: 1 1399: 21

Per-Language Difficulty Overrides

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

Add Difficulty Override
-1 to exclude, 1-1399 for level
Frequency and Tier Signals
Combined Frequency Rank: 2521 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Extended (2 of 2) 1600

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 4.41 5670 36% 15592 downrated 1
20th_books 7.49 3730 36% 10257 downrated 1
wiki_math 87.94 562 36% 1546 downrated 1
wiki_geography 236.82 159 36% 437 downrated 1
wiki_biology 93.77 488 36% 1342 downrated 1
wiki_modern_life 72.60 642 36% 1766 downrated 1
wiki_arts 20.35 2480 36% 6820 downrated 1
wiki_society 49.56 995 36% 2736 downrated 1
wiki_linguistics 18.44 2350 36% 6462 downrated 1
wiki_physical_science 133.65 357 36% 982 downrated 1
wiki_history 15.03 3259 36% 8962 downrated 1
early_modern_science 0.00 — — — 0
religious_translated 0.00 — — — 0
cooking 9.83 2552 36% 5200 capped 1
legal_scotus 17.95 2350 36% 6462 downrated 1
eu_parliament_debates 20.39 1895 36% 5211 downrated 1
openstax_science 108.14 429 36% 1180 downrated 1
openstax_society 151.38 282 36% 776 downrated 1
wpa_life_histories 0.00 — — — 0

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.