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What does the sample standard deviation best estimate?

The standard deviation of the population. the standard deviation of the population.


What is the standard error if the population standard deviation is 100 and the sample size is 25?

Formula for standard error (SEM) is standard deviation divided by the square root of the sample size, or s/sqrt(n). SEM = 100/sqrt25 = 100/5 = 20.


Can a standard deviation of a sample be equal to a standard deviation of a population?

Yes


Is population standard deviation the same thing as absolute standard deviation?

No.


What is the standard deviation of 157 160 161 172 165 149?

The standard deviation if the data is a sample from a population is 7.7115; if it is the population the standard deviation is 7.0396.


What is the statistic that is used to estimate a population standard deviation?

the sample standard deviation


What is the standard deviation of height in the US population?

The standard deviation of height in the US population is approximately 3 inches.


The standard deviation of the distribution of means is also known as the population standard deviation?

Yes.


How do i find sample standard deviation from population standard deviation?

If the population standard deviation is sigma, then the estimate for the sample standard error for a sample of size n, is s = sigma*sqrt[n/(n-1)]


If all students in a class scored 100 on an exam what is the standard deviation?

Standard deviation is 0.


What happens if you estimate population standard deviation with the sample standard deviation?

Not a lot. After all, the sample sd is an estimate for the population sd.


When the population standard deviation is not known the sampling distribution is a?

If the samples are drawn frm a normal population, when the population standard deviation is unknown and estimated by the sample standard deviation, the sampling distribution of the sample means follow a t-distribution.