What is the meaning of median salary or average salary?

Answer 1

average salary is a pretty generic term and does not tell you how the number is computed. Usually, but not always, it would be the sum of the salaries divided by the number of salaries. This is known as the mean. The median salary is the "middle" value. That is to say, if you listed all the salaries from lowest to highest, the median would be right in the middle. A more precise statistical definition might say it is the value that separates the higher half of a sample or a probability distribution from the lower half. When you say average, the might indicate the mean salary, but we don't know for sure. The mean is what I described in the first paragraph.