The following distribution gives the daily income of 50 workers of a factory: Daily income (in Rs):  100-120  120-140  140-160  160-180  180-200 Number of workers:           12             14            8              6            10 Convert the above distribution to a less than type cumulative frequency distribution and draw its ogive.

The following table gives the daily income of 50 workers of a factory: Daily income (in Rs): 100-120 120-140 140-160 160-180 180-200 Number of workers: 12 14 8 6 10 Find the mean, mode and median of the above data.

Consider the following distribution of daily wages of 50 workers of a factory. Daily wages (in Rs).: 100-120 120-140 140-160 160-180 180-200 Number of workers: 12 14 8 6 10 F i nd the mean daily wages of the workers of the factory by using an appropriate method.

The following distribution gives the daily income of 50 workers of a factory. {:("Daily income",,400-420,,420-440,,440-460,,460-480,,480-500),("Number of workers",,12,,14,,8,,6,,10):} Convert this distribution to less than type of cumulative frequency distribution and draw its ogive.

Compute the value of mode for the following frequency distribution. Class: 100-110 110-120 120-130 130-140 140-150 150-160 160-170 Frequency 4 6 20 32 33 8 2

Construct a histogram from a following distribution of total marks obtain-ed by 65 students of IX class in the final examination: Marks(mid-points): 150 160 170 180 190 200 No. of Students 8 10 25 12 7 3

The following table shows the distribution of the heights of a group of factory workers : Determine the cumulative frequencies {:(" Ht. (cm): ", 150- 155, 155-160, 160-165, 165-170, 170-175, 175-180, 180-185),(" No. of workers " ," "6, " "12, " "18, " "20, " "13, " "8, " "6):}

From the following frequency distribution, prepare the 'less than' ogive. {:("Rainfall (in cm)",5-15,15-25,25-35,35-45,45-55,55-65),("Number of days",22,10,8,15,5,6):}

Given below is the frequency distribution of the heights of 50 students of a class: Class Interval:, 140-145, 145-150, 150-155, 155-160, 160-165 Frequency:, 8, 12, 18, 10, 5 Draw a histogram representing the above data.

Write the class-size in each of the following: 0-4,5-9,10-14 10-19,20-29,30-39 100-120,120-140,160-180 0-0.25,0.25-0.50,0.50-0.75 5-5.01,5.01-5.02,5.02-5.03

The following table gives the number of finished articles turned out per day be different number of workers in a factors. Find the standard deviation of the daily output of finished articles. Find the variance and standard deviation of the following frequency distribution: Number of article:, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27 No. of workers:, 3, 7, 11, 14, 18, 17, 13, 8, 5, 4