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.
Therefore, our variance is 225.
Umm 8/12 or 2/3 .......................................................................
Sum of interior angles of polygon is fixed for each one. 540 is pentagon in which any shape with 5 sides. Therefore the answer is the last one
Answer:
5d
Explanation:
5 is the coefficient and when put directly next to d gives you 5 times d
Pretty sure that both A and B are correct