Base Difficulty

Base difficulty: Level 1203 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: 10356 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
cefr A1 (1 of 6) 800

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 3.58 206 1% 20000 capped 2
20th_books 3.71 207 1% 20000 capped 2
wiki_math 0.00 — — — 0
wiki_geography 0.00 — — — 0
wiki_biology 0.25 3205 1% 9000 capped 1
wiki_modern_life 0.32 2711 1% 10000 capped 1
wiki_arts 2.13 326 1% 10000 capped 2
wiki_society 1.11 691 1% 11000 capped 1
wiki_linguistics 0.46 1674 1% 9000 capped 1
wiki_physical_science 0.00 — — — 0
wiki_history 1.10 696 1% 9000 capped 1
early_modern_science 0.41 1667 1% 10400 capped 1
religious_translated 4.80 172 1% 10400 capped 2
cooking 0.28 1865 1% 5200 capped 1
legal_scotus 0.00 — — — 0
eu_parliament_debates 0.07 5352 1% 11000 capped 1
openstax_science 0.00 — — — 0
openstax_society 0.46 1805 1% 11000 capped 1
wpa_life_histories 1.38 513 1% 20000 capped 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.