Find the value of x, if the mean of observations 18, 24, 15, 2x + 1 and 12 is 21.
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Answered by
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Answer:
-24.5
Step-by-step explanation:
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Step-by-step explanation:
mean = sum of all observations\ total no. of obeservations
so, 18 + 24 + 15 + 2x+1 +12 = 21
70 + 2x = 21
2x = 70 - 21
2x = 49
x = 49\2
x = 24.5
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