Dataset: 2

Dataset: 4, 9, 7, 8, 5, 2

a. What number is n in xn?
b. Find ∑x
c. Find ∑(x-2)2
d. Find √∑(x-2)2/6

Correct answer:

n =  6
b =  35
c =  123
d =  4.5277

Step-by-step explanation:

n=6
b=4+9+7+8+5+2=35
c=(4−2)2+(9−2)2+(7−2)2+(8−2)2+(5−2)2+(2−2)2=123
d=((4−2)2+(9−2)2+(7−2)2+(8−2)2+(5−2)2+(2−2)2)/6​=4.5277

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