Base Difficulty

Base difficulty: Level 285 edit

Level distribution for noun (process_event): 19: 2 20: 1 196: 26 285: 25 289: 27 290: 29 300: 1 330: 2 350: 3 360: 1 370: 1 380: 1 405: 9 450: 1 460: 1 470: 1 476: 1 1000: 2 1010: 6 1020: 6 1030: 6 1040: 12 1050: 18 1060: 5 1070: 12 1080: 1 1110: 2 1120: 10 1130: 7 1202: 1 1204: 1 1210: 1 1211: 1 1216: 1 1399: 118

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: 6384 (weighted harmonic mean of corpus + tier signals; lower = more common)
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 10.48 1111 11% 8542 downrated 2
20th_books 7.03 1471 11% 13239 downrated 1
wiki_math 2.57 3283 11% 8000 capped 1
wiki_geography 5.26 2891 11% 9000 capped 1
wiki_biology 0.00 — — — 0
wiki_modern_life 18.39 1118 11% 7802 downrated 2
wiki_arts 4.44 3379 11% 10000 capped 1
wiki_society 11.71 2284 11% 11000 capped 2
wiki_linguistics 0.00 — — — 0
wiki_physical_science 74.10 214 11% 1602 downrated 2
wiki_history 16.52 1362 11% 8116 downrated 2
early_modern_science 15.78 791 11% 7119 downrated 1
religious_translated 11.01 1330 11% 8892 downrated 2
cooking 0.00 — — — 0
legal_scotus 35.53 588 11% 3595 downrated 2
eu_parliament_debates 7.92 2549 11% 11000 capped 2
openstax_science 71.71 245 11% 1646 downrated 2
openstax_society 16.30 1274 11% 8248 downrated 2
wpa_life_histories 15.01 836 11% 6524 downrated 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.