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

1,694 words

85% Coverage

2,474 words

90% Coverage

3,625 words

95% Coverage

5,802 words

98% Coverage

8,053 words

99% Coverage

8,804 words

Total Words

9,554

Difficulty Progression

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

Progress	Difficulty	Peak
0%	4.03/5	4.52/5
10%	4.18/5	4.58/5
20%	3.59/5	4.34/5
30%	4.17/5	4.58/5
40%	4.10/5	4.55/5
50%	3.97/5	4.49/5
60%	3.88/5	4.47/5
70%	4.03/5	4.52/5
80%	3.79/5	4.42/5
90%	3.57/5	4.28/5
Overall	3.99/5	4.51/5

Deciles

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

10%

2.11/5

20%

2.95/5

25%

3.16/5

30%

3.37/5

40%

3.79/5

50%

3.99/5

60%

4.17/5

70%

4.34/5

80%

4.51/5

90%

4.68/5

Overall Difficulty

3.99/5

Peak Difficulty

4.51/5