CBSE Class 4 Maths Handling Data Worksheet

CHAPTER : 11 HANDLING DATA

Do the following

Question 1. This graph shows the waking up time of students in class IV-A on Fridays.
Answer the following questions.
a) What is on the vertical scale of the graph?
b) What is on the horizontal scale of the graph?
c) How many students are there in class IV-A?
d) At what time do least students get up?
e) How many students get up at 8:30 a.m on friday?
Answer:
a) Number of students is on the vertical scale.
b) Time is on the horizontal scale.
c) Total number of students = \(2 + 4 + 6 + 8 + 14 = 34\)
d) At 6:00 am, least students (2 students) get up.
e) 14 students get up at 8:30 a.m.
In simple words: The graph shows how many students wake up at different times on Friday morning.

Exam Tip: Always check the scale of a graph carefully, especially when each grid square represents more than one unit.

Question 2. The following bar graph shows the total marks (out of 100) obtained by 6 students from a particular class.
Answer the following questions
a) Give the bar graph a title.
b) Who is the top scorer?
c) How much mark did Ramu get?
d) Who got least mark?
e) How much more mark Sana scored than Shan?
Answer:
a) Title: Total marks obtained by 6 students.
b) Hari is the top scorer (95 marks).
c) Ramu got 60 marks.
d) Ali got the least mark (30 marks).
e) Marks scored by Sana = 80, Marks scored by Shan = 60, Difference = \(80 - 60 = 20\) marks.
In simple words: By reading the heights of the bars, we can easily compare the marks scored by different students.

Exam Tip: Read the height of each bar accurately by aligning the top of the bar with the numbers on the vertical axis.

Question 3. Rita made a circle chart of the favourite colour of children in her class. Look at the circle chart and mark true (T) or false (F).
a) More children like red than green.
b) The third most loved colour is blue.
c) The least favourite colour is yellow.
d) Less children like blue, green and yellow put together than red.
Answer:
a) True (T)
b) False (F) - Red is largest, Green is second, Blue is third, Yellow is least.
c) True (T)
d) True (T) - Red occupies more than half of the circle chart.
In simple words: A circle chart (pie chart) shows parts of a whole using different sectors of a circle.

Exam Tip: In circle charts, compare the sizes of the slices to determine which category is larger or smaller.