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1. Mention two merits of range.2. Mention two demerits of range.何FOR访寸て何可deTTI3. What is standard deviation?

Answer»

1) Merits:1. It is easiest to calculate and simplest to understand even for a beginner.2. It is one of those measures which are rigidity defined.2) Demerits:1. Range is not based on all the terms. Only extreme items reflect its size. Hence range cannot be completely representative of the data as all other middle values are ignored.2. Due to above reason range is not a reliable measure of dispersion.3) a quantity expressing by how much the members of a group differ from the mean value for the group.

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