In Class 2, ___________ students were absent that day.
Answer
The scale of the graph is 1 unit length = 1 student, so the height of a bar can be read straight off the vertical line.
Lakhanpal's bar graph. The bar for Class II reaches the line marked 5.
Bar for Class II reaches the gridline 5 → 5 students were absent
Answer: 5.
Tip: to read a bar, put a ruler flat on its top edge and slide your eye left to the vertical line. The equally spaced horizontal lines are drawn exactly for this — every gap stands for the same number.
Q2.
In which class were the maximum number of students absent? ___________
Answer
Look for the tallest bar in the graph.
Class VIII → 7 students absent — the tallest bar of all
(next comes Class II and Class VII with 5 each)
Answer: Class VIII (8th class), with 7 students absent.
Why the eye finds it instantly: all the bars have the same width and the same spacing, and they all start from 0. So only their heights differ, and the tallest bar can mean nothing except the largest number.
Q3.
Which class had full attendance that day? ___________
Answer
Full attendance means nobody was absent, that is, the number of absent students is 0. So look for the class with no bar at all.
Class V → 0 students absent → full attendance
Answer: Class V (5th class).
Did you notice? A value of 0 is shown by no bar, not by a missing column. The place for Class V is still kept on the horizontal line, with the same spacing as every other class — otherwise the graph would tell a lie about how many classes there are.
Total absent that day = 3 + 5 + 4 + 2 + 0 + 1 + 5 + 7 = 27 students