Question

2. which diagrams are used when value of some variables is too high or too low as
compared to other variables in an individual series?
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Answer 1

Answer:

Data Visualization – How to Pick the Right Chart Type?

Making sense of facts, numbers, and measurements is a form of art – the art of data visualization. There is a load of data in the sea of noise. To turn your numbers into knowledge, your job is not only to separate noise from the data, but also to present it the right way.

Many of us come from the "PowerPoint generation" — this is where the roots of our understanding of data visualization and presentation lie. Unfortunately, it is far from anything related to good, and I stand before you as guilty myself.

And if you think I'm too cynical about this, don't take only my word for it.