A number has the digits 1, 9 and 5 to the nearest 100 the number rounds to 600. What is the number?
2 answers:
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1. Mean.
2. <span>Standard deviation.
First we have to square each value and calculate the mean of that squares:
so the variance:
and the standard deviation:
</span>
2. <span>Standard deviation.
First we have to square each value and calculate the mean of that squares:
so the variance:
and the standard deviation:
</span>