यदि6,8,5,x,4,7और8का माध्य 7 हैं तोxका मान करे
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Step-by-step explanation:
mean = sum of all obs./total obs.
7 = 6 + 8 + 5 + × + 4 + 7 + 8/7
7 = 38 + x / 7
x = 4
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