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प्रश्न
Read the bar graph shown in Fig. 23.10 and answer the following questions
(i) What is the information given by the bar graph?
(ii) What was the number of commercial banks in 1977?
(iii) What is the ratio of the number of commercial banks in 1969 to that in 1980?
(iv) State whether true or false:
The number of commercial banks in 1983 is less than double the number of commercial banks in 1969.
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उत्तर
(i) Given bar graph represents the number of commercial banks in India during some years.
(ii) The number of commercial banks in 1977 was
`120+(140-120)/2`
`=120+20/2`
=120+10
= 130.
(iii) The ratio of the number of commercial banks in 1969 was
`80 +(100-80)/2`
`=80+20/2`
=80+10
= 90
The number of commercial banks in 1980 was
`140+(160-140)/2`
`=140+20/2`
= 140+10
= 150
Hence, the required ratio is
`90/150`
=`3/5`
=3: 5
(iv) The number of commercial banks in 1983 was
`220+(240-220)/2`
`220+20/2`
=220+10
= 230
The number of commercial banks in 1969 was 90. When we multiply this number by 2, it becomes
2 × 90
= 180
Clearly, 230 is not less than 180.
Hence the statement is false.
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संबंधित प्रश्न
Given below (Fig. below) is the bar graph indicating the marks obtained out of 50 in mathematics paper by 100 students. Read the bar graph and answer the following questions:
(i) It is decided to distribute work books on mathematics to the students obtaining less than 20 marks, giving one workbook to each of such students. If a work book
costs Rs 5, what sum is required to buy the work books?
(ii) Every student belonging to the highest mark group is entitled to get a prize of Rs. 10. How much amount of money is required for distributing the prize money?
(iii) Every student belonging to the lowest mark—group has to solve 5 problems per day. How many problems, in all, will be solved by the students of this group per day?
(iv) State whether true or false.
a. 17% students have obtained marks ranging from 40 to 49.
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(v) What is the number of students getting less than 20 marks?
(vi) What is the number of students getting more than 29 marks?
(vii) What is the number of students getting marks between 9 and 40?
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Read the bar graph given in Fig. 23.17 and answer the following questions:
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Explain the reading and interpretation of bar graphs.
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The distribution of heights (in cm) of 96 children is given below. Construct a histogram and a frequency polygon on the same axes.
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136 to 140 |
140 to 144 |
144 to 148 |
148 to 152 |
152 to 156 |
156 to 160 |
160 to 164 |
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The following table gives the distribution of IQ's (intelligence quotients) of 60 pupils of class V in a school:
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118.5 to 125.5 |
111.5 to 118.5 |
104.5 to 111.5 |
97.5 to 104.5 |
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83.5 to 90.5 |
76.5 to 83.5 |
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62.5 to 69.5 |
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Read the following bar graph and answer the following questions:
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| 20 – 24 | 10 |
| 25 – 29 | 28 |
| 30 – 34 | 32 |
| 35 – 39 | 48 |
| 40 – 44 | 50 |
| 45 – 49 | 35 |
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