BUTTER - 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

1,808 words

85% Coverage

2,806 words

90% Coverage

4,496 words

95% Coverage

7,443 words

98% Coverage

11,261 words

99% Coverage

12,533 words

Total Words

13,806

Difficulty Progression

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

Progress	Difficulty	Peak
0%	3.40/5	4.28/5
10%	3.72/5	4.61/5
20%	3.41/5	4.39/5
30%	3.44/5	4.33/5
40%	2.79/5	4.16/5
50%	3.59/5	4.55/5
60%	3.45/5	4.50/5
70%	2.67/5	4.42/5
80%	2.05/5	4.34/5
90%	2.77/5	4.26/5
Overall	3.23/5	4.44/5

Deciles

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

10%

1.07/5

20%

1.61/5

25%

1.88/5

30%

2.14/5

40%

2.69/5

50%

3.23/5

60%

3.78/5

70%

4.16/5

80%

4.44/5

90%

4.72/5

Overall Difficulty

3.23/5

Peak Difficulty

4.44/5