Statistics

The sum of all deviations from the arithmetic mean of the numerical sequence 4, 6, 51, 77, 90, 93, 95, 109, 113, 117 is:

Correct answer:

x =  

Step-by-step explanation:

Σx=755 xˉ=Σx/10=75.5  Δ1​=75.5−4=71.5 Δ2​=75.5−6=69.5 Δ3​=75.5−51=24.5 Δ4​=75.5−77=−1.5 Δ5​=75.5−90=−14.5 Δ6​=75.5−93=−17.5 Δ7​=75.5−95=−19.5 Δ8​=75.5−109=−33.5 Δ9​=75.5−113=−37.5 Δ10​=75.5−117=−41.5  x=ΣΔi​=0

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