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Number of children in six different classes are given below. What will be the scale of the given data by using the bar graph?

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1unit = 20 children

1unit = 50 children

1unit = 30 children

1unit = 100 children

answer is A.

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Detailed Solution

Given a graph representing number of children in six different classes.
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In the bar graph, the minimum children are in class 10 i.e. 80.
Therefore 0 to 80 has to be covered easily so, we can take a gap of 20.
Hence, 1 unit = 20 children is the scale.
Therefore, option 1 is correct.

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