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Q: What is the mean of the sample means that is normally distributed with a mean of 10 standard deviation of 2 and a sample size f 25?
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True or false a distribution of sample means is normally distributed with a mean equal to the population mean and standard deviation equal to the standard error of the mean?


When the population is normally distributed population standard deviation s is unknown and the sample size is n equals 15 the confidence interval for the population mean s is based on the?

The Z test.

What is the sample standard deviation of 27.5?

A single observation cannot have a sample standard deviation.

What does the sample standard deviation best estimate?

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

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


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)]

How does one calculate the standard error of the sample mean?

Standard error of the sample mean is calculated dividing the the sample estimate of population standard deviation ("sample standard deviation") by the square root of sample size.

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

the sample standard deviation

Sample standard deviation?

Standard deviation in statistics refers to how much deviation there is from the average or mean value. Sample deviation refers to the data that was collected from a smaller pool than the population.

Lets assume you have taken 100 samples of size 36 each from a normally distributed population Calculate the standard deviation of the sample means if the populations variance is 25?

square (25/36) = 5/6 = .833

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.

How do you calculate sample standard deviation?

Here's how you do it in Excel: use the function =STDEV(<range with data>). That function calculates standard deviation for a sample.