The standard deviation of all possible values is called the
A)standard error of proportion
B)standard error of the mean
C)mean deviation
D)central variation

Question

The standard deviation of all possible  values is called the
A)standard error of proportion 
B)standard error of the mean 
C)mean deviation 
D)central variation

Quizplus · Accepted Answer

The standard deviation of all possible values is called the standard deviation. However, when we are using a sample to estimate the population mean, we use the standard error of the mean, which is the standard deviation of the sample mean. This is a better estimate of the true standard deviation of the population mean because it takes into account the variability of the sample mean. Option A is incorrect because it refers to the standard error of proportion, which is used when we want to estimate the standard deviation of a proportion. Option C is incorrect because it refers to the mean deviation, which is a measure of variability that is calculated by taking the absolute deviations from the mean. Option D is incorrect because it is not a term commonly used in statistics.

The Standard Deviation of All Possible Values Is Called