Answer:
the answer is b
Step-by-step explanation:
i took the test it is b. The sum of the areas of faces A, B, and C.
Subtract them left to right
We have been given that the standard deviation of a group of 20 scores is 15 and we are asked to find variance.
Since we know variance is square of standard deviation. In order to find out the variance of the given data we have to take the square of 15.
![\text{ Variance}=\sigma^{2}\\ =15^{2}=225](https://tex.z-dn.net/?f=%5Ctext%7B%20Variance%7D%3D%5Csigma%5E%7B2%7D%5C%5C%0A%3D15%5E%7B2%7D%3D225)
Therefore, our variance is 225.
An ellipse uses major axis and minor axis.
The major is the larger axis and the minor is the smallest.
Since this ellipse is wider than it is tall the horizontal red line would be the major axis.
The answer is B.