Standard error of the Mean

Question 1

Means

Answer 1

• calculated mean from a sample will not be the same as the true mean from the whole population
• this is random error and occurs by chance

Question 2

Error

Answer 2

-error of not having the true population mean is represented by the standard error of the mean taken from that population

Question 3

Standard deviation

Answer 3

-dispersion of sample mean value around a range of observed values within a sample

Question 4

Standard error of the mean

Answer 4

-refers to the dispersion of population mean value around a range of various mean values obtained from repeated sampling of the population

Question 5

Standard error

Answer 5

-the standard deviation of the distribution of the means
-this enables us to calculate confidence intervals
SE= standard deviation of the sample mean/ square root of the sample size