PDF chapter test TRY NOW
1. Find the standard deviation of first \(21\) natural numbers.
Answer:
The standard deviation \(=\)
2. If the standard deviation of a data is \(4.5\) and if each value of the data is decreased by \(5\), then find the new standard deviation.
Answer:
New standard deviation \(=\)
3. If the standard deviation of a data is \(3.6\) and each value of the data is divided by \(3\), then find the new variance and new standard deviation.
Answer:
New variance \(=\)
New standard deviation \(=\)
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