Propeller Opera - Volume 1 - 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

1,711 words

85% Coverage

2,469 words

90% Coverage

3,666 words

95% Coverage

5,746 words

98% Coverage

7,629 words

99% Coverage

8,256 words

Total Words

8,884

Difficulty Progression

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

Progress	Difficulty	Peak
0%	3.81/5	4.42/5
10%	4.04/5	4.53/5
20%	3.15/5	3.95/5
30%	3.54/5	4.25/5
40%	3.74/5	4.41/5
50%	3.87/5	4.46/5
60%	4.15/5	4.57/5
70%	4.10/5	4.55/5
80%	3.98/5	4.51/5
90%	3.53/5	4.28/5
Overall	3.85/5	4.45/5

Deciles

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

10%

2.28/5

20%

2.89/5

25%

3.07/5

30%

3.23/5

40%

3.55/5

50%

3.85/5

60%

4.06/5

70%

4.26/5

80%

4.45/5

90%

4.65/5

Overall Difficulty

3.85/5

Peak Difficulty

4.45/5