Question

• Verify for any rational numbers x, y and z.
i) x+(y+ z) = (x+y)+z.

ii) x × (y×z) = (x×y)×z​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

The Quartile Deviation is a simple way to estimate the spread of a distribution about a measure of its central tendency (usually the mean). So, it gives you an idea about the range within which the central 50% of your sample data lies.