Standard deviation is the square root of the variance, which is the average squared deviation from the mean and as an average of some squared numbers it can't be negative<span>.
</span><span>The smallest value variance can reach is zero. This is when all the numbers in the data set are the same, therefore all the deviations from the mean are zero, all squared deviations are zero and their average is also zero.</span>
if a > 0, there are two possible solutions:

the square root of a square is the base in absolute value bars


if a = 0, that means x = 0. anything multiplied by 0 is 0
if a < 0, there are no solutions because anything squared has to be positive
Answer:

Step-by-step explanation:
To find the values of
for which, the value of
belongs to
,we solve the inequality;

We multiply through by 8 to obtain;

We subtract 3 to get

Divide through by -1 to obtain;

Or

Answer:hi there
Step-by-step explanation:
Answer:
Step-by-step explanation:
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