Question

For compairson of two data sets we use
1. median
2. mean
3. Bar graph
4. Doible bar graph​

Answer 1

Answer:

Bar graph

Hope it will help you

Answer 2

Answer:

Double Bar graph

Step-by-step explanation:

I think you wrote doible instead of double. In a double bar graph, the bar of two different data sets are placed adjoining to each other. it is used for comaprison as a whole. If your question means using only one way, then double bar graph, but if your question means two ways can be used, then bar graph, as two bar graphs can be used for compariso.

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