The answer is 6.25. all you do is take 356.25 and divide it by 57.
<span>mean: ( 9 + 7 + 6.5 + 7.5 + 7 + 8 + 5 + 6 + 7.5 + 8 ) : 10 = 7.15Variance:(Sigma)² = ( 1.85² + 0.15² + 0.65² + 0.35² + 0.15² + 0.85² + 2.15² + 1.15² + 0.35² + 0.85² ) : 10 ≈ 1.15Answer: C ) 1.15</span>
Answer:
It's D = 20 units
here is the pic :)
Step-by-step explanation:
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P = 16 because if u add 4 to 14 you will get 18 and minus 2 from it to get 16
C. these are the y values shown on the graph
