Answer:
the answer is 0.0625 (a)
Step-by-step explanation:
i took the test on edginuity
.0625 or A
You have to work out the mean. (The simple average of those numbers) Then for each number subtract the Mean and square the result. Then work out the average of those squared differences.
7;4 7 to 4
Answer:120.
Step-by-step explanation:this is because there are 3 grades at the school 6th 7th and 8th so you simple need to divide 360 by 3 and that gets you 360.