Consider these sample​ data: x1=15​, x2=9​, x3=3​, x4=22.   a. Find n.        b. Compute ∑xi.      c.Determine x.

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Consider these sample​ data:
x1=15​,
x2=9​,
x3=3​,
x4=22.
 
a. Find n.     
 
b. Compute ∑xi.
    
c.Determine x.
 
 
 
a.n=
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