Descriptive Sta...

In how many of the given years was the production of fertilizers more than the average production of the given years?

For how many companies has there been no decrease in production in any year from the previous year?

In which pair of years was the number of candidates qualified, the same?

The difference in the sales of cellular phones for the years $$1997$$ and $$1999$$ is?

Suppose a researcher is concerned with a nominal scale that identifies users versus nonusers of bank credit cards. The measure of central tendency appropriate to this scale is the

The average production for five years was maximum for which company?

What was the percentage increase in imports from 1997 to 1998 ?

The degree to which numerical data tend to spread about value is called

All the students of a class performed poorly in Mathematics. The teacher decided to give grace marks of $$10$$ to each of the students. Which of the following statistical measures will not change even after the grace marks were given.

If $$x $$ is increased by $$k$$ then $$\sigma$$  changes to