4/26/2008 10:57 AM
Statguru wrote:
This is a measure of statisitcal dispersion. Average of the squared distance of its possible values from the mean. Gives an idea how the spread of the values. It is a way to capture the degree of spread. The unit of variance is the square Reply to this
4/26/2008 11:02 AM
statguru wrote:
The larger the variance, the further that individual values of the random variable tend to be from the mean, on average. The smaller the variance, the closer that individual values of the random variable tend to be to the mean, on average.
taking the square root of the variance gives the standard deviation.
The variance and standard deviation of a random variable are always non-negative. Reply to this
This is a measure of statisitcal dispersion.
Average of the squared distance of its possible values from the mean.
Gives an idea how the spread of the values.
It is a way to capture the degree of spread.
The unit of variance is the square
Reply to this
The larger the variance, the further that individual values of the random variable tend to be from the mean, on average.
The smaller the variance, the closer that individual values of the random variable tend to be to the mean, on average.
taking the square root of the variance gives the standard deviation.
The variance and standard deviation of a random variable are always non-negative.
Reply to this