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प्रश्न
Construct histograms for following frequency distribution:
| Class Mark | 15 | 25 | 35 | 45 | 50 | 55 | 60 |
| Frenuencv | 6 | 12 | 15 | 18 | 25 | 14 | 10 |
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उत्तर
Steps :
a. Make the class intervals continuous by taking class mark as midpoints.
b. On the x-axis, take 1 cm as 5 units and plot class interval.
c. On the y-axis , take 1 cm as 5 units and plot frequency.
d. Draw rectangles of histogram as per given data .
| Class Interval | Frequency |
| 0-9.5 | - |
| 9.5-19.5 | 6 |
| 19.5-29.5 | 12 |
| 29.5-39.5 | 15 |
| 39.5-47.5 | 18 |
| 47.5-52.5 | 25 |
| 52.5-57.5 | 14 |
| 57.5-62.5 | 10 |
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संबंधित प्रश्न
The following is the frequency distribution of waiting time at ATM centre; draw histogram to represent the data:
| Waiting time (in seconds) |
Number of Customers |
| 0 -30 | 15 |
| 30 - 60 | 23 |
| 60 - 90 | 64 |
| 90 - 120 | 50 |
| 120 - 150 | 5 |
The following histogram shows the number of literate females in the age group of 10 to 40 years in a town:
(i) Write the age group in which the number of literate female is the highest.
(ii) What is the class width?
(iii) What is the lowest frequency?
(iv) What are the class marks of the classes?
(v) In which age group literate females are the least?
A graph that displays data that changes continuously over the periods of time is _________
Draw a histogram and the frequency polygon in the same diagram to represent the following data
| Weight (in kg) | 50 − 55 | 56 − 61 | 62 − 67 | 68 − 73 | 74 − 79 | 80 − 85 | 86 − 91 |
| No. of persons | 15 | 8 | 12 | 17 | 9 | 10 | 6 |
Try yourself
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Histogram shows the number of people owning the different number of books. Answer the question based on it.
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In a histogram, class intervals and frequencies are taken along ______ axis and ______ axis.
Draw a histogram to represent the frequency distribution in question 91.
Prepare a histogram from the frequency distribution table obtained in question 93.
