NCERT Solutions for Class 7th Maths Chapter 5 Dot Plots — In-text Questions
Book page 103 Updated on2026-09-19
Q1.
Does this visualisation capture all the data presented in the tables earlier?
The dot plot on page 103. Green circles are Yahapur’s twelve monthly prices, purple diamonds are Wahapur’s.
Answer
No. The dot plot keeps every price, but it throws away every month.
Information
In the table?
In the dot plot?
All 24 price values
Yes
Yes — one dot each
Which town each price belongs to
Yes
Yes — by colour
How many times a price repeats
Hard to see
Yes — stacked dots
Which month a price belongs to
Yes
No — lost
The order of the months
Yes
No — lost
Why it happens: a dot plot sorts the values along a number line. Sorting is what makes clusters, gaps and the highest and lowest values jump out — but sorting is exactly what destroys the original month-wise order.
Tip: every picture of data is a trade. You gain one kind of clarity and lose another. That is why the chapter later draws the same onion data again as a clustered bar graph, where the months come back.
Q2.
Looking at it, can we tell the price of onions in Yahapur in the month of January?
Answer
No, we cannot. The dot plot shows that Yahapur had a price of ₹25 at some point in the year, but nothing on it says when.
Why it happens: the horizontal line of the dot plot carries price, not time. Once the dots are arranged by price, the month label has nowhere left to live. We can say "one of Yahapur's twelve monthly prices was ₹25" — we cannot say "January's price was ₹25" from this picture alone.
Check it yourself: from the original table, January in Yahapur was indeed ₹25. But that came from the table, not from the dot plot. Keeping straight what your evidence actually shows is the whole habit this chapter is teaching.