Question
Download Solution PDFThe arithmetic mean of the observations 28, 31, 40, 63, 57, 37, 34, 70 and 99 is:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
Observations = 28, 31, 40, 63, 57, 37, 34, 70, 99
Formula used:
Arithmetic Mean (AM) = (Sum of Observations) / (Number of Observations)
Calculation:
Sum of Observations = 28 + 31 + 40 + 63 + 57 + 37 + 34 + 70 + 99
⇒ Sum = 459
Number of Observations = 9
⇒ AM = 459 / 9
⇒ AM = 51
∴ The correct answer is option (4).
Last updated on Jul 19, 2025
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