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प्रश्न
Let x, y, z be three observations. The mean of these observations is ______.
विकल्प
`(x xx y xx z)/3`
`(x + y + z)/3`
`(x - y - z)/3`
`(x xx y + z)/3`
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उत्तर
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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