Base Difficulty

Base difficulty: Level 162 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: 200 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
cambridge_yle Flyers (3 of 3) 1200
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 70.79 1726 97% 1231 2
20th_books 86.17 1441 97% 1044 2
wiki_math 2907.09 59 97% 39 2
wiki_geography 712.12 283 97% 161 2
wiki_biology 1662.36 100 97% 59 2
wiki_modern_life 395.16 589 97% 321 2
wiki_arts 546.87 292 97% 207 2
wiki_society 1332.66 132 97% 69 2
wiki_linguistics 994.16 189 97% 121 2
wiki_physical_science 924.97 178 97% 125 2
wiki_history 518.63 339 97% 224 2
early_modern_science 318.71 611 97% 346 2
religious_translated 0.00 — — — 0
cooking 0.00 — — — 0
legal_scotus 249.08 813 97% 506 3
eu_parliament_debates 669.34 289 97% 178 3
openstax_science 764.94 217 97% 149 2
openstax_society 1652.01 113 97% 63 2
wpa_life_histories 123.94 972 97% 757 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.