Q1 of 40 Page 200

Write the mark wise frequencies in the following frequency distribution table.

The mark wise frequency representation indicates the upper range of the marks and their corresponding frequencies. Let’s form a frequency table showing mark wise frequencies.


We can also represent marks and their corresponding frequencies on a graph, which will show relationship between them.



More from this chapter

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8

The electricity bills (in rupees) of 25 houses in a locality are given below. Construct a grouped frequency distribution table with a class size of 75.

170, 212, 252, 225, 310, 712, 412, 425, 322, 325, 192, 198, 230, 320, 412, 530, 602, 724, 370, 402, 317, 403, 405, 372, 413

 9

A company manufactures car batteries of a particular type. The life (in years) of 40 batteries were recorded as follows:


Construct a grouped frequency distribution table with exclusive classes for this data, using class intervals of size 0.5 starting from the interval 2 - 2.5.

 2

The blood groups of 36 students of IX class are recorded as follows.

A O A O A B O A B A B O


B O B O O A B O B AB O A


O O O A AB O A B O A O B


Represent the data in the form of a frequency distribution table. Which is the most common and which is the rarest blood group among these students?


 3

Three coins were tossed 30 times simultaneously. Each time the number of heads occurring was noted down as follows;

1 2 3 2 3 1 1 1 0 3 2


1 2 2 1 1 2 3 2 0 3 0


1 2 3 2 2 3 1 1


Prepare a frequency distribution table for the data given above.