Black Box - 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

865 words

85% Coverage

1,328 words

90% Coverage

2,077 words

95% Coverage

3,515 words

98% Coverage

4,934 words

99% Coverage

5,407 words

Total Words

5,880

Difficulty Progression

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

Progress	Difficulty	Peak
0%	2.46/5	3.63/5
10%	2.58/5	3.87/5
20%	2.64/5	4.15/5
30%	3.39/5	4.03/5
40%	2.68/5	3.83/5
50%	2.94/5	3.73/5
60%	3.23/5	4.42/5
70%	3.36/5	4.22/5
80%	3.35/5	4.14/5
90%	3.01/5	4.00/5
Overall	2.97/5	4.04/5

Deciles

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

10%

1.13/5

20%

1.77/5

25%

2.05/5

30%

2.26/5

40%

2.62/5

50%

2.97/5

60%

3.31/5

70%

3.67/5

80%

4.04/5

90%

4.53/5

Overall Difficulty

2.97/5

Peak Difficulty

4.04/5