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.
Answer:
yes it is safe
Step-by-step explanation:
so if you d base times hight you will get 27 witch is the degrees of witch the triangle it creates
Answer:
140%
Step-by-step explanation:
28-10 = 14 person enrolled
14/10 = 140%
Answer:
p70 is the point of the bottom lines