The mean average of numbers: 4, 6, 2, 4 is

The average of numbers: $3$, $3$, $5$, $x$ is $(-8)$. Pick $x$

The weighted average of numbers: 4, 4, 6 with weights 1, 1, 2 respectively is

The weighted average of numbers: 1, 2, 4 is 3. Choose the adequate weights

The weighted average of numbers: $5$, $5$, $x$ with weights $1$, $1$, $2$ respectively is $10$. Pick $x$

For numbers: 3, 4, 5 pick deviation of the value 3 from the arithmetic mean

Pick the standard deviation for numbers: 1, 4, 1

The standard deviation for numbers: $1$, $x$ is $2$. Then $x$ may be

The standard deviation for numbers: 1 ; -1, 1 ; -1, 1 ; -1, 1 ; -1, 1 ; -1 is

The standard deviation for numbers: 1, 0, - 1, 0, 0, 0, 0, 0 is

If each of 9 numbers increase twice, then the standard deviations

If the string of numbers is completed with the next number equal to the average, then the average

If each of 6 numbers increase twice, then the average

If each of 6 numbers increase twice, then the average

The standard deviation for numbers: 4, 4, 4, 4, 4, 4, 4, 4, 4, 4 is

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