Created 3 years ago
MA2102
Probability and Statistics
Lecture-14
Special Expectations
Now we are going to look at some important numerical measures associated with probability distribution of random variable.
Given a random variable , along with its distribution, it would be extremely useful if we are able to summarize the essential properties of distribution by suitably defined measures. One such measure is
Definition:(Mean)
The mean value of random variable is denoted by and defined to be provided it exists.