Teaching TN TRB CS Mock Test Engineering Mathematics Probability and Statistics Random Variables Basics
In the following table, x is the discrete random variable and p(x) is the probability density function. The standard deviation of x is
|
x |
1 |
2 |
3 |
4 |
|
p(x) |
0.2 |
0.4 |
0.3 |
0.1 |
1
0.3
2
0.5
3
0.7
4
0.9