Statistics

What is the median of the data set: 12, 15, 18, 20, 22?

If the mean of five numbers is 20, what is the sum of these numbers?

The mode of the data set 3, 7, 7, 7, 10, 15, 15 is:

For a grouped frequency distribution, the class interval with the highest frequency is called:

Given the following frequency distribution, find the mean: Class intervals: 0-10, 10-20, 20-30, 30-40 Frequencies: 5, 8, 12, 5

If the variance of a data set is 16, what is the standard deviation?

The coefficient of variation (CV) is defined as:

In a frequency distribution, the median lies in the class where the cumulative frequency just exceeds:

If the mean of a data set is 50 and the coefficient of variation is 20%, what is the standard deviation?

For the grouped data with modal class 30-40, frequency 15, preceding frequency 10, succeeding frequency 12, class width 10, the mode is: