Paper 4: Fundamentals of Business Mathematics & Statistic

5.12 I FUNDAMENTALS OF BUSINESS MATHEMATICS AND STATISTICS

Measures of Central Tendency and Measures of Dispersion

SELF EXAMINATION QUESTIONS :

1. The weight of 6 persons are as follows (in kg.) 70, 42, 85, 75, 68, 55. Find the mean weight.
   [Ans. 65.83 kg.]


2. Find A.M. of the following numbers :
   (i) 1, 2, 3, ...... upto 10^ th term [Ans. 5.5]
   (ii) The first 10 even numbers [Ans. 11]
   (iii) The first 10 odd numbers [Ans. 10]


3. Find A.M. of the following numbers :
   (i) 77, 73, 75, 70, 72, 76, 75, 71, 74, 78 [Ans. 74.10]
   (ii) 4, 5, 6, 7, 5, 4, 8, 6, 2, 5, 3 [Ans. 5]


4. Find A.M. of the given frequency distribution :
   (i) Weight (kg.) Persons
   50 15
   55 20
   60 25
   65 30
   70 30
   Total 120
   [Ans. 61.67 kg.]
   (ii) Weight (kg.) Workers
   20 8
   21 10
   22 11
   23 16
   24 20
   25 25
   26 15
   27 9
   28 6
   [Ans. 24.05 Kg.]