1. Study the following frequency distribution table and answer the questions given below.

(i) What is the size of the class intervals?

Frequency Distribution of Daily Income of 550 workers of a factory

                                            Table 5.3

       Class Interval

   (Daily Income in Rs.) 

        Frequency

  (Number of workers)

           100-125  

         45

          125-150

         25

         150-175

         55

        175-200

         125

        200-225

         140

       225-250

         55

       250-275

        35

     275-300

        50

      300-325

        20

      Total

         550

 

Answers (1)

(i) The size of the class intervals = 125-100=25

       Class Interval

   (Daily Income in Rs.) 

        Frequency

  (Number of workers)

           100-125  

         45

          125-150

         25

         150-175

         55

        175-200

         125

        200-225

         140

       225-250

         55

       250-275

        35

     275-300

        50

      300-325

        20

      Total

         550

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