HARD
11th ICSE
IMPORTANT
Earn 100

From the following data, calculate the percentage of workers who earn more than 840 per week.

Weekly wages (in ₹) 500-600 600-700 700-800 800-900 900-1000 1000-1100
No. of workers 12 17 22 29 12 6

 

Important Questions on Statistics

HARD
11th ICSE
IMPORTANT

Consider the following distribution :

Marks obtained 0-10 10-20 20-30 30-40 40-50
No. of students 8 10 22 40 20

Determine the pass marks if 85% of the students pass the exam.

HARD
11th ICSE
IMPORTANT

Consider the following distribution :

Marks obtained 0-10 10-20 20-30 30-40 40-50
No. of students 8 10 22 40 20

The marks which 45% of the students exceed. Round off your answer to nearest integer.

HARD
11th ICSE
IMPORTANT

Given below is the distribution of daily earning of 60 workers in a factor :

More than (in ₹) 240 210 180 150 120 90 60
No. of workers 0 4 27 39 50 57 60

If 55% of the workers fulfill their requirements, find the minimum daily earning to meet the requirements of a worker.

EASY
11th ICSE
IMPORTANT

Determine the value of the mode for the following sets of data:

10,11,10,12,11,10,11,11,11,12,13,11,12

EASY
11th ICSE
IMPORTANT

Determine the value of the mode for the following sets of data:

x 14 15 16 17 18 19 20
f 14 26 18 9 2 1 1
MEDIUM
11th ICSE
IMPORTANT

In a class test, the marks (out of 10) of 30 students were:

5,3,6,5,5,4,1,3,8,4,3,6,5,4,8,2,5,4,4,4,3,7,2,4,5,4,8,9,10,7

Draw a tally chart and a frequency table. Hence, find

The mean

MEDIUM
11th ICSE
IMPORTANT

In a class test, the marks (out of 10) of 30 students were:

5,3,6,5,5,4,1,3,8,4,3,6,5,4,8,2,5,4,4,4,3,7,2,4,5,4,8,9,10,7

Draw a tally chart and a frequency table. Hence, find

the median

EASY
11th ICSE
IMPORTANT

In a class test, the marks (out of 10) of 30 students were:

5,3,6,5,5,4,1,3,8,4,3,6,5,4,8,2,5,4,4,4,3,7,2,4,5,4,8,9,10,7

Draw a tally chart and a frequency table. Hence, find

the mode