Omar recorded the number of hours he worked each week for a year. Below is a random sample that he took from his data:
$13, 17, 9, 21$
What is the standard deviation for the data?
Standard deviation:
$s=\sqrt{\frac{\left(x_1-\bar{x}\right)^2+\left(x_2-\bar{x}\right)^2+\ldots+\left(x_n-\bar{x}\right)^2}{n-1}}$
A0
B4.4
C5.2
D26.7
$13, 17, 9, 21$
What is the standard deviation for the data?
Standard deviation:
$s=\sqrt{\frac{\left(x_1-\bar{x}\right)^2+\left(x_2-\bar{x}\right)^2+\ldots+\left(x_n-\bar{x}\right)^2}{n-1}}$
A0
B4.4
C5.2
D26.7