Propeller Opera - Volume 2 - Statistics

Coverage

This shows how much text coverage you'll have if you know the most X frequent words in that work.

Vocabulary Coverage

Milestones

80% Coverage

1,685 words

85% Coverage

2,458 words

90% Coverage

3,608 words

95% Coverage

5,776 words

98% Coverage

8,043 words

99% Coverage

8,799 words

Total Words

9,555

Difficulty Progression

Shows how the difficulty changes as you progress through the book.

Progress	Difficulty	Peak
0%	4.18/5	4.67/5
10%	4.33/5	4.73/5
20%	3.74/5	4.49/5
30%	4.32/5	4.73/5
40%	4.25/5	4.70/5
50%	4.12/5	4.64/5
60%	4.03/5	4.62/5
70%	4.18/5	4.67/5
80%	3.94/5	4.57/5
90%	3.72/5	4.43/5
Overall	4.14/5	4.66/5

Deciles

Shows the difficulty level at or below which X% of the text falls.

10%

2.26/5

20%

3.10/5

25%

3.31/5

30%

3.52/5

40%

3.94/5

50%

4.14/5

60%

4.32/5

70%

4.49/5

80%

4.66/5

90%

4.83/5

Overall Difficulty

4.14/5

Peak Difficulty

4.66/5