Base Difficulty

Base difficulty: Level 276 edit

Level distribution for noun (quantitative_concept): 20: 1 162: 24 276: 25 380: 25 390: 1 456: 1 1000: 1 1050: 2 1070: 2 1080: 10 1090: 1 1110: 1 1202: 2 1203: 1 1204: 2 1206: 1 1210: 2 1211: 1 1213: 7 1218: 1 1225: 2 1226: 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
basic_english Basic (1 of 2) 600
cefr B2 (4 of 6) 6900

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 72.27 1253 100% 1253 1
20th_books 56.41 1554 100% 1554 1
wiki_math 104.69 1169 100% 1169 1
wiki_geography 129.27 999 100% 999 1
wiki_biology 171.63 776 100% 776 1
wiki_modern_life 269.90 426 100% 426 1
wiki_arts 133.01 976 100% 976 1
wiki_society 158.11 791 100% 791 1
wiki_linguistics 60.07 1934 100% 1934 1
wiki_physical_science 1744.96 51 100% 51 1
wiki_history 126.46 972 100% 972 1
early_modern_science 283.10 381 100% 381 1
religious_translated 27.57 3084 100% 3084 1
cooking 62.32 1542 100% 1542 1
legal_scotus 23.94 3866 100% 3866 1
eu_parliament_debates 54.48 1948 100% 1948 1
openstax_science 1042.00 86 100% 86 1
openstax_society 112.50 1249 100% 1249 1
wpa_life_histories 26.52 2917 100% 2917 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.