NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 3: Data Handling - Problems and SolutionsQuestion 82
Class 7 - Mathematics - Unit 3: Data Handling - Problems and Solutions
Question. 82
In a public library, the following observations were recorded by the librarian in a particular week:
| Days | Mon | Tues | Wed | Thurs | Fri | Sat |
|---|---|---|---|---|---|---|
| Newspaper Readers | 400 | 600 | 350 | 550 | 500 | 350 |
| Magazine Readers | 150 | 100 | 200 | 300 | 250 | 200 |
(a) Draw a double bar graph choosing an appropriate scale.
(b) On which day, the number of readers in the library was maximum?
(c) What is the mean number of magazine readers?
Answer:
(a) Give the double bar graph here
(b) Thursday
(c) 200
Detailed Answer with Explanation:
(b) Max readers = 550+300 = 850 on Thursday.
(c) Mean = (150+100+200+300+250+200)/6 = 200.