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Statistics and Probability

The daily income of a sample of 50 employees are tabulated as follows :

Find the mean daily income of employees.

Statistics and Probability

The following table gives the number of pages written by Sarika for completing her own book for 30 days :

Find the mean number of pages written per day.

Statistics and Probability

Calculate the mean of the following data :

Statistics and Probability

Calculate the mean of the scores of 20 students in a mathematics test :

Statistics and Probability

Find the mean of the distribution :

Statistics and Probability

The frequency distribution table of agricultural holdings in a village is given below :

Find the modal agricultural holdings of the village.

Statistics and Probability

  The  percentage  of  marks  obtained  by  100  students  in  an examination are given below:

Determine the median percentage of marks.

Statistics and Probability

Daily wages of 110 workers, obtained in a survey, are tabulated below :

Daily  wages  (in  Rs)    Number  of  workers

100-120                              10

120-140                              15

140-160                              20

160-180                              22

180-200                              18

200-220                             12

220-240                             13

Compute the mean daily wages of these workers.

Statistics and Probability

Construct the cumulative frequency distribution of the following distribution :

Statistics and Probability

. A bag contains slips numbered from 1 to 100. If Fatima chooses a slip at random from the bag, it will either be an odd number or an even number. Since this situation has only two possible outcomes, so, the probability of each is 1/2 . Justify.