Question
Download Solution PDFFind x if the mean of the numbers 10, 4, 1, 15, 15, x, 12 and 14 is 10.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
Mean of 10, 4, 1, 15, 15, x, 12 and 14 = 10
Formula used:
Mean of the data = Sum of the numbers / total numbers
Calculation:
Mean = 10
⇒ (10 + 4 + 1 + 15 + 15 + x + 12 + 14)/8 = 10
⇒ (71 + x)/8 = 10
⇒ 71 + x = 80
⇒ x = 80 - 71 = 9
Thus, x = 9
∴ The correct answer is option (3).
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