If the variance of the data values in a sample is 144, what is the standard deviation of the data values?

12

Step-by-step explanation:

We are given that the variance of the data values in a sample = 144

Since we know that the value of variance is the square of standard deviation.

Therefore, to find the value of standard deviation by using variance, we need to find the square root of the variance.

i.e.

the 2 figures are congruent bc if you reflect abcd over the y axis then over the d axis the figures overlap