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Earn +20 ptsQ: Can the variance of a sample be negaTIve?
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Continue Learning about Statistics
Show that in simple random sampling the sample variance is an unbiased estimator of population variance?
It is a biased estimator. S.R.S leads to a biased sample variance but i.i.d random sampling leads to a unbiased sample variance.
If a sample of size 3 students showed the following grades in a certain exam 74 75 and 76 then the variance is?
The sample variance is 1.
What is the relationship between standard deviation and variance for the same sample data?
The standard deviation is the square root of the variance.
The standard deviation of a sample of 10000 observations equals 121 The variance of the sample equals?
It equals 14641.
What is variance for a negative correlation?
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