0 the fact that two or more things are different, or the amount or number by which they are different:
There has been some unusual variance in temperature this month.
I could detect subtle variances in fragrance as we strolled through the garden.
We had to get a (zoning) variance before we could build the extension on our house.
Young people's reactions to world events are often at variance with those of their parents.
1 permission to do something differently from the official or usual way:
2 a difference between two or more or things:
3 the difference between the costs, sales, etc. expected during a particular period, and the final costs, etc:
Weekly sales variances are more volatile and ultimately less meaningful.
4 a change in a law, especially one involving the use of property, that is allowed by a local government in particular situations:
apply for/request/seek a variance The power company has applied for a variance to the county rule on burying lines.
grant/deny a variance They filed a lawsuit against trustees after they were denied a variance to build a home on 17.82 acres.
He says he requested a zoning variance but that the county refused to process it.
The variances thus scaled linearly with the square of the mean.
Note that samples may, under this formulation, have different variances as well as different means.
The correlations among the endogenous variables actually reflect correlations among the residual variances of these variables.
We can think of these variances in precisely the same way as we do when thinking about any observed variable.
To express these means and variances in statistical terms, we treat the within-person model parameters as random variables and write equations for the parameters themselves.
Repeated measures analysis of variances with pre- and postintervention assessments of respective variables as the dependent variables were conducted.
The specification of the multivariate conditional mean should be tested for its empirical adequacy; otherwise, the conditional variances and covariances may be biased.
Performing the estimation for each period, we obtained estimates for the parameters and variances.
