MEDIUM
Defence
IMPORTANT
Earn 100

The least number of sides that a frequency polygon can have to depict a frequency distribution is:

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Important Questions on Statistics

EASY
Defence
IMPORTANT
Combined Defence Services Examination>Chapter 8 - Statistics>MULTIPLE CHOICE QUESTIONS>Q 10
Which one of the following is used to give quantitative information on a geographical basis?
EASY
Defence
IMPORTANT
Combined Defence Services Examination>Chapter 8 - Statistics>MULTIPLE CHOICE QUESTIONS>Q 17

The average monthly production of certain factory for the first 9 months is 2584 units and for the remaining three months is 2416 units. Calculate the average monthly production for a year.

EASY
Defence
IMPORTANT
Combined Defence Services Examination>Chapter 8 - Statistics>MULTIPLE CHOICE QUESTIONS>Q 19
In a certain examination, the average grade of all students in a class A is 68 and all students in class B is 65. If there are 15 and 20 students respectively in two classes, find their combined average.
EASY
Defence
IMPORTANT
Combined Defence Services Examination>Chapter 8 - Statistics>MULTIPLE CHOICE QUESTIONS>Q 20
The mean of a certain frequency distribution with two categories of total sample size 20 is 7. If each category is increased by 15, the resulting mean of the distribution is
EASY
Defence
IMPORTANT
Combined Defence Services Examination>Chapter 8 - Statistics>MULTIPLE CHOICE QUESTIONS>Q 21
The average marks secured by 50 students was 44. Later on, it was found that a score of 36 was misread as 56. Find the correct average secured by the students. 
MEDIUM
Defence
IMPORTANT
Combined Defence Services Examination>Chapter 8 - Statistics>MULTIPLE CHOICE QUESTIONS>Q 55
When the data is to be shown as a percent break down, it can be shown by:
EASY
Defence
IMPORTANT
Combined Defence Services Examination>Chapter 8 - Statistics>MULTIPLE CHOICE QUESTIONS>Q 56
When the variations in the items are very large the diagrammatic representation can be done by:
EASY
Defence
IMPORTANT
Combined Defence Services Examination>Chapter 8 - Statistics>MULTIPLE CHOICE QUESTIONS>Q 60
The sum of the deviation from the arithmetic mean is always: