Desktop User Guides > Professional > Table scripting > Statistical tests > Column means test > Statistical formula for the least significant difference test
 
Statistical formula for the least significant difference test
Notation
Description
This graphic is described in the surrounding text.
Weighted count of cases contributing to the mean in column i.
This graphic is described in the surrounding text.
Weighted sum of the values in column i.
This graphic is described in the surrounding text.
Weighted sum of the squared values in column i.
NCOL
The number of columns in the group.
The formula for the least significant difference value for independent values is as follows.
The degrees of freedom are:
This graphic is described in the surrounding text.
and the LSD value is:
This graphic is described in the surrounding text.
where MS is the mean square:
This graphic is described in the surrounding text.
HM is the harmonic mean:
This graphic is described in the surrounding text.
and SIGVAL is the critical value of T for DOF degrees of freedom at the significance level defined by the user.
See also
Column means test