1.

In an experiment with 15 observations on x, the following results were available: ∑x2=2830, ∑x=170 One observation that was 20 was found to be wrong and was replaced by the correct value 30. The corrected variance is

Answer»

In an experiment with 15 observations on x, the following results were available: x2=2830, x=170 One observation that was 20 was found to be wrong and was replaced by the correct value 30. The corrected variance is




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