Propeller Opera - Volume 4 - 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

1,564 words

85% Coverage

2,241 words

90% Coverage

3,256 words

95% Coverage

5,088 words

98% Coverage

6,383 words

99% Coverage

6,814 words

Total Words

7,246

Difficulty Progression

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

Progress	Difficulty	Peak
0%	3.55/5	4.43/5
10%	3.35/5	4.43/5
20%	3.59/5	4.48/5
30%	3.74/5	4.54/5
40%	3.72/5	4.54/5
50%	3.11/5	4.13/5
60%	3.66/5	4.50/5
70%	3.25/5	4.09/5
80%	3.21/5	4.12/5
90%	3.87/5	4.54/5
Overall	3.51/5	4.44/5

Deciles

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

10%

1.48/5

20%

2.29/5

25%

2.52/5

30%

2.75/5

40%

3.15/5

50%

3.51/5

60%

3.86/5

70%

4.16/5

80%

4.44/5

90%

4.72/5

Overall Difficulty

3.51/5

Peak Difficulty

4.44/5