EASY
9th West Bengal Board
IMPORTANT
Earn 100

The mid-value of a class-interval of a frequency distribution is x and its lower boundary is y. Then its upper-boundary =

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Important Questions on Frequency Distributions of Grouped Data

EASY
9th West Bengal Board
IMPORTANT

The range of the data 10,11,17,6,3,12,21,24,9,8,25 is

EASY
9th West Bengal Board
IMPORTANT

Which one of the following denotes an attribute?

EASY
9th West Bengal Board
IMPORTANT

The marks obtained in the Madhyamik exam is

MEDIUM
9th West Bengal Board
IMPORTANT

The class-mark and class-length of a class-interval are 22 and 10 respectively. Find its lower and upper class-boundaries.

MEDIUM
9th West Bengal Board
IMPORTANT

Find the frequency density of third class-interval of the given frequency distribution.

Class-interval 70-74 75-79 80-84 85-89
Frequencies 3 4 5 8
MEDIUM
9th West Bengal Board
IMPORTANT

Find the relative frequency of the second class-interval of the frequency distribution.

Class-interval 70-74 75-79 80-84 85-89
Frequencies 3 4 5 8
MEDIUM
9th West Bengal Board
IMPORTANT

The class-mark of a class-interval of a frequency distribution in m and its class-length is l. Find its lower and upper class-limits

MEDIUM
9th West Bengal Board
IMPORTANT

Determine the third class-interval of the classes 10-19,20-29,....... and find its lower and upper class-boundaries.