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CDS || Elementary Mathematics || Statistics || Quiz

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Question 1

The mean of the following distribution is 18.

What is the value of f?

Question 2

Consider the following statements:

I. A frequency distribution condenses the data and reveals its important features.

II. A frequency distribution is an equivalent representation of original data

Which of the statement(s) given above is/are correct?

Question 3

Square diagrams are drawn to represent the following data:

Using the scale 25, what is the length of the representative square for Maharashtra?

Question 4

The cumulative frequency curve of a frequency distribution with 6 classes and total frequency 60 is a straight line. Consider the following statements.

i. The first and the last classes have a frequency of 10 each

ii. Both the middle classes have a total frequency of 30

iii. The frequency distribution does not have a mode

Which of the statements given above are correct?

Question 5

The yield of maize per plot of one acre were obtained from a number of plots from two different cities in a state and are summarized in the following table.

Which one of the following statements is correct?

Question 6

From the data given, the median of the average deposit balance of saving for the branch during August 2020 is :

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Oct 12CDS & Defence