(B) When dealing with a large set of data,it is difficult to interpret individual values. To make the data more manageable and understandable,we group

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(B) When dealing with a large set of data,it is difficult to interpret individual values. To make the data more manageable and understandable,we group the values into intervals or ranges. These groups are known as $classes$ or $class$ $intervals$.

Class 9 Mathematics Statistics Mix Examples - Statistics and Probability

Easy

To present a large amount of data so that a reader can make sense of it easily,the variable values are condensed into groups called ..........

A
Frequency
B
classes
C
primary data
D
secondary data

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Class 9 Questions

Class 9

Mathematics Questions

Chapter

Statistics

Subtopic

Mix Examples - Statistics and Probability

The mean of $10$ observations is $48$. If each observation is divided by $3$,what will be the new mean?

Medium

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The class marks of a continuous distribution are: $1.04, 1.14, 1.24, 1.34, 1.44, 1.54$ and $1.64$. Is it correct to say that the last interval will be $1.55-1.73$? Justify your answer.

Medium

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Ten observations $6, 14, 15, 17, x+1, 2x-13, 30, 32, 34, 43$ are written in an ascending order. The median of the data is $24$. Find the value of $x$.

Medium

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Draw a histogram for the following frequency distribution with unequal class length:

Class $0-10$ $10-20$ $20-40$ $40-70$ $70-100$

Frequency $15$ $13$ $28$ $36$ $27$

Medium

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Mean of $50$ observations was found to be $80.4$. But later on,it was discovered that $96$ was misread as $69$ at one place. Find the correct mean.

Medium

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Class	$0-10$	$10-20$	$20-40$	$40-70$	$70-100$
Frequency	$15$	$13$	$28$	$36$	$27$

To present a large amount of data so that a reader can make sense of it easily,the variable values are condensed into groups called ..........

Similar Questions

The mean of $10$ observations is $48$. If each observation is divided by $3$,what will be the new mean?

The class marks of a continuous distribution are: $1.04, 1.14, 1.24, 1.34, 1.44, 1.54$ and $1.64$. Is it correct to say that the last interval will be $1.55-1.73$? Justify your answer.

Ten observations $6, 14, 15, 17, x+1, 2x-13, 30, 32, 34, 43$ are written in an ascending order. The median of the data is $24$. Find the value of $x$.

Draw a histogram for the following frequency distribution with unequal class length: Class $0-10$ $10-20$ $20-40$ $40-70$ $70-100$ Frequency $15$ $13$ $28$ $36$ $27$

Mean of $50$ observations was found to be $80.4$. But later on,it was discovered that $96$ was misread as $69$ at one place. Find the correct mean.

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Draw a histogram for the following frequency distribution with unequal class length:

Class $0-10$ $10-20$ $20-40$ $40-70$ $70-100$

Frequency $15$ $13$ $28$ $36$ $27$