In an experiment with 15 observations on x, the following results were available \sumx^2=2830 \sumx=170 One observation that was 20, was found to be wrong and was replaced by the correct value 30. Then the corrected variance is

KEAM 2017 Math Paper

Question : 46 of 120

Marks: +1, -0

In an experiment with 15 observations on x, the following results were available
Σx2=2830 Σx=170
One observation that was 20, was found to be wrong and was replaced by the correct value 30. Then the corrected variance is

9.3
8.3
188.6
177.3
78

Validate

Go to Question:

Prev Question

Next Question