8 - STATISTICS AND PROBABILITY

Range

Standard deviation

Arithmetic mean

Variance

0

1

8

3

Always positive

always negative

zero

non-zero integer

40000

160900

160000

30000

32.25

44.25

33.25

30

3

15

5

225

3.5

3

4.5

2.5

3/10

7/10

3/9

7/9

2

1

3

1.5

5

10

15

20

12/13

1/13

23/26

3/26

1/5

3/10

2/3

4/5