HARD
10th ICSE
IMPORTANT
Earn 100

If the median of the following distribution is 58 and the sum of all the frequencies is 140. Find the values of x and y.

Variable 15-25 25-35 35-45 45-55 55-65 65-75 75-85 85-95
Frequency 8 10 x 25 40 y 15 7

Important Questions on Statistics

HARD
10th ICSE
IMPORTANT

If the median of the number of patients attending a hospital is 36, then find the missing frequencies f1 and f2 in the following frequency distribution, when it is given that the total number of days is 100.

Number of patients  0-10 10-20 20-30 30-40 40-50 50-60 60-70
Number of days 5 12 f1 f2 15 11 14
HARD
10th ICSE
IMPORTANT

During Medical check-up of 200 students of the school, their weights were recorded as follows:-

Weight (in kg) 30-39 40-49 50-59 60-69 70-79 80-89
Number of students 5 22 63 74 30 6

Find the median weight (kg) of students.

MEDIUM
10th ICSE
IMPORTANT

Draw a histogram from the following frequency distribution and find the mode from the graph.

Class 0-5 5-10 10-15 15-20 20-25 25-30
frequency 2 5 18 14 8 5

 

MEDIUM
10th ICSE
IMPORTANT

Find the mode of following data, using a histogram.

Class 0-10 10-20 20-30 30-40 40-50
Frequency 5 12 20 9 4
MEDIUM
10th ICSE
IMPORTANT

The following table shows the expenditure of 60 boys on books.

Expenditure (in ₹)  20-25 25-30 30-35 35-40 40-45 45-50
Number of Students 4 7 23 18 6 2

Find the mode of their expenditure.

MEDIUM
10th ICSE
IMPORTANT

Using a graph paper draw a histogram for the given distribution showing the number of runs scored by 50 batsman. Estimate the mode of the data.

Runs scored Number of batsman
3000-4000 4
4000-5000 18
5000-6000 9
6000-7000 6
7000-8000 7
8000-9000 2
9000-10000 4

 

EASY
10th ICSE
IMPORTANT

The marks of 200 students in a test are given below

Marks% 10-19 20-29 30-39 40-49 50-59 60-69 70-79 80-89
Number of students 7 11 20 46 57 37 15 7

Draw the histogram and find the mode.

MEDIUM
10th ICSE
IMPORTANT

Draw a histogram for the distributions and estimate their modes.

  Marks % 30-39 40-49 50-59 60-69 70-79 80-89 90-99
  Number of students 14 26 40 92 114 78 36