Q1.
The following data represent height of
Q2.
Arrange it in descending order of height and find the range of the given data.
The pocket expenses of a boy during a week are
(inRs):
Find range of his expenses and the mean
Q3.
of expenses.
Find the mean of first five multiples of
Q4.
Find median of the first
Q5.
The age of
girls in a class:
.
even numbers.
players of a school are given below:
Age (in years)
Number of players
(i) Find the range of the ages in the above data.
(ii) Find the mean age.
Q6.
Daily wages of
workers in a factory are given below:
Daily
Wages
(in Rs)
Number
of
Workers
Find the mean.
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Q7.
The following table shows marks obtained by
students of a class. Find mean and
mode of marks:
Marks
obtained
Number
of
student
Q8.
Given below is the number of pairs of shoes of different sizes sold in a day by the
owner of the shop:
Size of
shoe
Number
of pairs
What is the modal shoe size?
Q9.
Find the median of first
whole numbers.
Q10.
Calculate median for the following data:
Marks
No. of students
Q11.
Find median of the following frequency distribution:
Age (in years)
Number of people
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Q12.
Find the median weight for the following data:
Weight
(in
kgs.)
Number
of boys
Q13.
The rainfall (in mm) in a city on
days of a certain week was recorded as follows:
Day
Rainfall (in mm)
(i) Find the range of the rainfall in the above data.
(ii) Find the mean rainfall for the week.
(iii) On how many days was the rainfall less than the mean rainfall?
Q14.
Following tables shows the points of each player scored in four games:
Player
Game 1
Game 2
Game 3
Game 4
A
B
C
Did not play
Answer the following questions:
(i) Find the mean to determine A’s average number of points scored per game.
(ii) To find the mean number of points per game for , would you divide the total
points by
(iii)
by
? Why?
Played in all four games. How would you find the mean?
(iv) Who is the best performer?
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Q15.
Q16.
The following data shows the number of scooters produced by a company during six
consecutive years:
Year
2001
2002
2003
2004
2005
2006
No.of scooters
11000
14000
12500
17500
15000
24000
Gold prices on
consecutive Mondays were as under:
Week
First
Second
Third
Fourth
Rate/10
gm (in
RS)
8500
8750
9050
9250
Draw a bar graph to show this information.
Q17.
Given below is bar graph showing the heights of five mountain peaks.
Read the bar graph and answer the following questions:
(i) Which is the highest peak and what is the height?
(ii) What is the ratio of the heights of the highest peak and the next highest
peak?
(iii) Arrange heights of the given peaks in descending
order?
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Q18.
A dice is thrown
times and the outcomes are noted as shown below:
Outcome
Frequency
When the dice is thrown at random, find the probability of getting a (i)
Q19.
A survey of
girls showed that
like tea,
(ii)
and (iii)
.
dislike it. Out of these girls, one
girl is chosen at random. What is the probability that the chosen girl (i) likes tea
and (ii) dislikes tea?
Q20.
Two coins are tossed simultaneously
head:
times;
heads:
the probability of getting (i)
times and we get heads:
times; one
times. When two coins are tossed at random, what is
heads and (ii)
head?
Answers
A1.
A2.
A3.
A4.
A5.
(i)
(ii)
A6.
A7.
A8.
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A9.
A10.
A11.
A12.
50
A13.
(i)
(ii)
A14.
(i)
(ii)
A15.
Hint: On x-axis, mark the years at uniform gap.
On y–axis mark number of scooters, take
A16.
Hint: take
(iii)
(iii)
.
weeks as First, Second etc on x –axis, On y- axis mark the price in Rs.
Scale:
A17.
(iv)
.
(i) Mount Everest;
(ii)
(iii)
A18.
(i)
(ii)
A19.
(i)
(ii)
A20.
(i)
(ii)
(iii)
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