Histograms
Ranks(rankName, salary)
•Estimate the size of
Employee Ranks
500
> 100k
6500
80k..100k
12000
5000
800
200
60k..80k
40k..60k
20k..40k
0..20k
Employee
2
> 100k
100
80k..100k
80
40
20
8
60k..80k
40k..60k
20k..40k
0..20k
Ranks
Salary