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

1,557 words

85% Coverage

2,231 words

90% Coverage

3,243 words

95% Coverage

5,077 words

98% Coverage

6,367 words

99% Coverage

6,797 words

Total Words

7,227

Difficulty Progression

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

Progress	Difficulty	Peak
0%	3.40/5	4.29/5
10%	3.20/5	4.28/5
20%	3.44/5	4.33/5
30%	3.59/5	4.39/5
40%	3.57/5	4.39/5
50%	2.96/5	3.98/5
60%	3.51/5	4.35/5
70%	3.10/5	3.94/5
80%	3.06/5	3.97/5
90%	3.72/5	4.39/5
Overall	3.36/5	4.29/5

Deciles

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

10%

1.33/5

20%

2.14/5

25%

2.37/5

30%

2.60/5

40%

3.00/5

50%

3.36/5

60%

3.71/5

70%

4.01/5

80%

4.29/5

90%

4.57/5

Overall Difficulty

3.36/5

Peak Difficulty

4.29/5