2.7 - Standard Error Flashcards
What is meant by the term sampling variation?
The variance of the mean of different samples of the population
What is the population mean?
The average of all the sample means
What does the standard deviation of sample means tell us?
How widely spread the sample means are around the population mean
Why is the sampling distribution useful?
It tells us how representative a sample is of the population
What is sampling distribution?
The frequency distribution of all the sample means from the same population
What is the standard error of the mean?
The standard deviations of sample means
What letters are used to represent the standard error of the mean?
SE
What is the equation for calculating the standard error of the mean?
SE = standard deviation / square root of number of scores
What does a large SE mean?
There is a lot of variability between the means of different samples. The sample mean may not be representative of the population mean.
What does a small SE mean?
That most sample means are similar to the population mean. Accurate representation of the population mean.
