Cumulative Frequency Distribution

Given below is a frequency distribution of daily income of 100 workers of a factory : {:("Daily income of workers (in ₹) ","Number of workers "),(" "200-300," "12),(" "300-400," "18),(" "400-500," "35),(" "500-600," "20),(" "600-700," "15):} Convert this distribution to cumulative frequency distribution of more than type and less than type

I.Q.s of 100 students are given in the following less than type cumulative frequency distrbution : {:(" I.Q. ","Number of students "),("Less than 110 "," "0),("Less than 120 "," "10),("Less than 130 "," "29),("Less than 140 "," "64),("Less than 150 "," "78),("Less than 160 "," "90),("Less than 170 "," "100):} Obtain the cumulative frequency distribution of more than type for the data.

Convert the following cumulative distribution to a frequency distribution:

Following distribution gives cumulative frequencies of 'more than type': Change the above data to a continuous grouped frequency distribution.

Following distribution gives cumulative frequencies of 'more than type': Change the above data to a continuous grouped frequency distribution.

While constructing the cumulative frequency column of a frequency distribution, it is noticed that these cumulative frequencies arein arithmetic progression. Assertion (A) : All the class frequencies are equal. Reason (R) : when all the class frequencies are equal, the cumulative frequencies are arithmetic progression.

On the basis of the following frequency distribution draw less than cumulative frequency curve.

Construct the class boundaries of the following frequency distribution table. Also construct less than cumulative and greater than cumulative frequency tables.

The following table shows the cumulative distribution of marks of 800 students in an examination. Construct a frequency distribution table.

In the following grouped frequency distribution table class marks are given. Construct less than cumulative frequencies