Mathematics for Computer Science

Chapter 18 Random Variables744

3= 36

6= 36

x 2 V

2 3 4 5 6 7 8 9 10 11 12

PDFT.x/

Figure 18.1 The probability density function for the sum of two 6-sided dice.

0

1=2

1

x 2 V

0 1 2 3 4 5 6 7 8 9 10 11 12

: : :

CDFT.x/

Figure 18.2 The cumulative distribution function for the sum of two 6-sided dice.