The following data values represent a population what is the variance of the values 17, 5 ,11, 1,11
2 answers:
1) from smaller to higher:
1,5,11,11,17
2) find the mean
<span>1 + 5 + 11 + 11 + 17 = </span><span>45
</span>mean = 45/5 = 9
Variance = Σ(x- mean)²/(N-1)
[(1-9)² + (5-9)²+(11-9)² + (11-9)²+ (17-9)² ]'(5-1) = 38
Variance = 38
Answer:
18
Step-by-step explanation:
Find the mean
17+5+11+1+11= 45/5= 9
Subtract the mean from each number then square the sums
7-9= -2^2= 4
5-9= -4^2= 16
11-9= 2^2= 4
1-9= -8^2= 64
11-9= 2^2= 4
Find the mean of the sums
4+16+4+64+4= 92/5= 18
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