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Question
Let x, y, z be three observations. The mean of these observations is ______.
Options
`(x xx y xx z)/3`
`(x + y + z)/3`
`(x - y - z)/3`
`(x xx y + z)/3`
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Solution
Let x, y, z be three observations. The mean of these observations is `underlinebb((x + y + z)/3)`.
Explanation:
Here, x, y and z be three observations.
We know that,
Mean = `"Sum of observations"/"Number of observations"`
= `(x + y + z)/3`
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