Because the z-score table, which is heavily related to standard deviation, is only applicable to normal distributions.
What_is_the_relevance_of_standard_deviation_in_business
The standard deviation of the population. the standard deviation of the population.
The standard deviation is 0.
The standard deviation in a standard normal distribution is 1.
Because the z-score table, which is heavily related to standard deviation, is only applicable to normal distributions.
What_is_the_relevance_of_standard_deviation_in_business
The standard deviation is the standard deviation! Its calculation requires no assumption.
The standard deviation of the population. the standard deviation of the population.
The standard deviation is 0.
Information is not sufficient to find mean deviation and standard deviation.
Standard deviation is the square root of the variance.
The standard deviation in a standard normal distribution is 1.
Standard error of the mean (SEM) and standard deviation of the mean is the same thing. However, standard deviation is not the same as the SEM. To obtain SEM from the standard deviation, divide the standard deviation by the square root of the sample size.
The standard deviation is a measure of the spread of data.
You need more than one number to calculate a standard deviation, so 9 does not have a standard deviation.
Sure it can. But in the survey business, the trick is to select your sample carefully so that they'll be equal, i.e. a sample that is accurately representative of the population.