What is nine times a number x, in algebraic expression?
2 answers:
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Answer:
the base is 15cm
Step-by-step explanation:
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Answer:
2.4103
Step-by-step explanation:
The first step in evaluating the sample standard deviation of a data set involves the determination of the sample mean.
The sample mean is simply the average value of the data set;
sample mean =
The next step is to evaluate the sum of the squares of deviations from the mean;
sum of squares of deviation =
We then divide the sum of squares of deviation by (n-1) where n is the sample size to obtain the sample variance;
variance =
The standard deviation is simply the square-root of variance;