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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