ATP Barcelona 2017

Naïve running estimates

5

5

4

3

SD

2

1

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

mean

-1

-2

-3 Error, statistics (mm)

-4

-5

-5

Time  (days)

Estimates of mean and σ are unreliable themselves: residual errors in mean and margin