Class mark of a class interval 15 - 25 is:

The class mark of the class 130 - 150 is:

The class size and class mark respectively of te class 15 - 20 is:

The width of the class interval 70.5 - 75.5 is

If the range of a distribution is 50 and class interval is 10, then two number of classes is

The range of the data 7,9,7,5,9,9,18,6,8,9 is:

The range of the data
25,10,20,22,16,6,17,12,30,32,10,19,8,11,20.is:

Range of the following data is:
53,36,95,73,60,42,25,78,75,62

The range of the following frequency distribution is
2.7,2.7,2.8,2.1,2.4,3.2,2.1,3.1,2.8,3.2.

In the distribution, the frequency of the class 0 - 5 is
0,3,2,5,8,10,13,5,6,6,14,0.

In the distribution, the frequency of the class 3 - 5 is
4,8,3,6,7,2,3,5,9,4,6,5,5.

The upper limit of the class 36 - 40 is

The lower limit of the class 31-35 is

Class mark = 

When the information is gathered from a source which already had the information stored, the data obtained is called

'Number of absentees in each day in your class for a month' form

'Heights of 20 students of your class' from

Facts or information collected with a definite purpose are called:

Statistics is branch of

The word 'Latum' is a