Statistics Test...

The class mark of the class 90-120 is

The range of the data :

25, 18, 20, 22, 16, 6, 17, 15, 12, 30, 32, 10, 19, 8, 11, 20 is

In a frequency distribution, the mid value of a class is 10 and the width of the class is 6. The lower limit of the class is

The width of each of five continuous classes in a frequency distribution is 5 and the lower class-limit of the lowest class is 10. The upper class-limit of the highest class is

Let m be the mid-point and l be the upper class limit of a class in a continuous frequency distribution. The lower class limit of the class is 

The mean of five numbers is 30. If one number is excluded, their mean becomes 28. The excluded number is

The class mark of the class 85–90 is

For a frequency distribution the mid-value of the class is 65 and the class size is 8. The upper limit of the class is

The median of the data 32, 35, 39, 31, 35, 36, 33 is