Graph
Sum
Draw histrogram for the following distributions:
Class interval | 30-39 | 40-49 | 50-59 | 60-69 | 70-79 |
Frequency | 24 | 16 | 09 | 15 | 20 |
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Solution
Class Interval (Inclusive from ) | Class Interval (Exclusive from) | Frequency |
30-39 | 29.5-39.5 | 24 |
40-49 | 39.5-49.5 | 16 |
50-59 | 49.5-59.5 | 09 |
60-69 | 59.5-69.5 | 15 |
70-79 | 69.5-79.5 | 20 |
Step of construction:
(a) Convert the data into exclusive form.
(b) Taking suitable scales, marks class interval on x-axis abd frequency on y-axis.
(c) Construct rectangle with class intervals as bases and corresponding frequencies as heights.
Concept: Graphical Representation of Data as Histograms
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