Observe the given data:
(a) Draw a bar graph to represent the above given information.
(b) On which day of the week was the sales maximum?
(c) Find the total sales during the week.
(d) Find the ratio of the minimum sale to the maximum sale.
(e) Calculate the average sale during the week.
(f) On how many days of the week was the sale above the average sales?
Solution:
Given, the table represents the number of mobile phones sold in different days of the week.
(a) We have to draw a double bar graph choosing an appropriate scale.
(b) We have to find the day of the week in which the sales were maximum.
From the graph,
On saturday, the sales was maximum
(c) We have to find the total sales during the week.
Total sales during the week = 50 + 45 + 30 + 55 + 27 + 60
= 267
(d) We have to find the ratio of the minimum sale to the maximum sale.
From the graph,
Maximum sale = 60
Minimum sale = 27
Ratio = 27/60
= 9 : 20
(e) We have to calculate the average sale during the week.
Average sale = sum of sale during the week/number of days
Sum of sales = 50 + 45 + 30 + 55 + 27 + 60 = 267
Number of days = 6
Average sale = 267/6 = 44.5
(f) We have to find how many days of the week the sale was above the average sales.
From the graph,
The sale was above the average sales on Monday, Tuesday, Thursday and Saturday.
Number of days = 4
✦ Try This: The data given below shows the production of motor bikes in a factory for some months of two consecutive years.
| Months | January | February | March | April | May |
| 2009 | 3000 | 4000 | 3400 | 3300 | 5600 |
| 2008 | 4500 | 3500 | 4600 | 3200 | 5400 |
Study the table given above and answer the following questions: In which month for the year 2008, the production was the maximum?
☛ Also Check: NCERT Solutions for Class 7 Maths Chapter 3
NCERT Exemplar Class 7 Maths Chapter 3 Problem 84
Observe the given data: (a) Draw a bar graph to represent the above given information. (b) On which day of the week was the sales maximum? (c) Find the total sales during the week. (d) Find the ratio of the minimum sale to the maximum sale. (e) Calculate the average sale during the week. (f) On how many days of the week was the sale above the average sales
Summary:
(a) The double bar graph for the given data is mentioned above, (b) On Saturday, the sales were maximum, (c) The total sales during the week is 267, (d) The ratio of the minimum sale to the maximum sale is 9 : 20, (e) The average sale during the week is 44.5, (f) On 4 days of the week, the sale was above the average sales.
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