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What affects the standard error of the mean?
The standard error of the underlying distribution, the method of selecting the sample from which the mean is derived, the size of the sample.
What happens to the standard error of the mean if the sample size is decreased?
The standard error increases.
Why is the sample standard deviation used to derive the standard error of the mean?
the sample mean is used to derive the significance level.
What does a high standard error mean?
It means theres a high amount of variation between the results used to calculate the mean value for a particular sample or experiment
What is the value of the standard error of the sample mean?
The sample standard deviation (s) divided by the square root of the number of observations in the sample (n).
What affects the standard error of the mean?
The standard error of the underlying distribution, the method of selecting the sample from which the mean is derived, the size of the sample.
What happens to the standard error of the mean if the sample size is decreased?
The standard error increases.
Why is the sample standard deviation used to derive the standard error of the mean?
the sample mean is used to derive the significance level.
Why you need sampling distribution?
in order to calculate the mean of the sample's mean and also to calculate the standard deviation of the sample's
Is the standard error of the sample mean assesses the uncertainty or error of estimation?
yes
What does a high standard error mean?
It means theres a high amount of variation between the results used to calculate the mean value for a particular sample or experiment
What is the value of the standard error of the sample mean?
The sample standard deviation (s) divided by the square root of the number of observations in the sample (n).
If standard deviation 20 and sample size is 100 then standard error of mean is?
2
When we know the population mean but not the population standard deviation which statistic do we use to compare a sample to the population?
The sample standard error.
What happens to the standard error of the mean if the sample size is increased?
Decrease
What does the standard error mean?
For a sample of data it is a measure of the spread of the observations about their mean value.
What determines size difference between sample mean and population mean?
standard error
