Provides additional statistics to be calculated for summarizing group data.
Options
You can choose one or more of the following statistics to be calculated:
| Standard error of mean | Standard error of skewness |
| Skewness | Standard error of kurtosis |
| Kurtosis |
Method
|
|
Unweighted |
Weighted |
|
Skewness |
Σ(x – (Σx/n))3 / ( Σ(x – (Σx/n))2 )3/2 |
Σ w (x – (Σwx/Σw))3 / ( Σ w (x – (Σwx/Σw))2 )3/2
|
|
Kurtosis |
Σ(x – (Σx/n))4 / ( Σ(x – (Σx/n))2 )2 – 3 |
Σ w (x – (Σwx/Σw))4 / Σ w (x – (Σwx/Σw))2 )2 – 3
|
|
s.e. skewness |
√( { 6n * (n-1) } / { (n-2) * (n+1) * (n+3) } )
|
√( { 6Σw * (Σw – 1) } / { (Σw – 2) * (Σw + 1) * (Σw + 3) } ) (x not missing)
|
|
s.e. kurtosis |
√( { 24 * n * (n-1)2 } / { (n-2) * (n-3) * (n+5) * (n+3) } )
|
√( { 24 * Σw * (Σw – 1)2 } / { (Σw – 2) * (Σw – 3) * (Σw + 5) * (Σw + 3) } ) (x not missing)
|
See also
- Summary tables menu
- Summary tables store options dialog
- Multiple Summary Tables menu
- TABULATE directive in command mode