-@float Example, normality
-@cartouche
-@example
-@prompt{PSPP>} get file='@value{example-dir}/repairs.sav'.
-@prompt{PSPP>} examine mtbf
- /statistics=descriptives.
-@prompt{PSPP>} compute mtbf_ln = ln (mtbf).
-@prompt{PSPP>} examine mtbf_ln
- /statistics=descriptives.
-@end example
-
-Output:
-@example
- Case Processing Summary
-+-----------------------------------+-------------------------------+
-| | Cases |
-| +----------+---------+----------+
-| | Valid | Missing | Total |
-| | N|Percent|N|Percent| N|Percent|
-+-----------------------------------+--+-------+-+-------+--+-------+
-|Mean time between failures (months)|15| 100.0%|0| .0%|15| 100.0%|
-+-----------------------------------+--+-------+-+-------+--+-------+
-
- Descriptives
-+----------------------------------------------------------+---------+--------+
-| | | Std. |
-| |Statistic| Error |
-+----------------------------------------------------------+---------+--------+
-|Mean time between Mean | 8.32| 1.62|
-|failures (months) 95% Confidence Interval Lower | 4.85| |
-| for Mean Bound | | |
-| Upper | 11.79| |
-| Bound | | |
-| 5% Trimmed Mean | 7.69| |
-| Median | 8.12| |
-| Variance | 39.21| |
-| Std. Deviation | 6.26| |
-| Minimum | 1.63| |
-| Maximum | 26.47| |
-| Range | 24.84| |
-| Interquartile Range | 5.83| |
-| Skewness | 1.85| .58|
-| Kurtosis | 4.49| 1.12|
-+----------------------------------------------------------+---------+--------+
-
- Case Processing Summary
-+-------+-------------------------------+
-| | Cases |
-| +----------+---------+----------+
-| | Valid | Missing | Total |
-| | N|Percent|N|Percent| N|Percent|
-+-------+--+-------+-+-------+--+-------+
-|mtbf_ln|15| 100.0%|0| .0%|15| 100.0%|
-+-------+--+-------+-+-------+--+-------+
-
- Descriptives
-+----------------------------------------------------+---------+----------+
-| |Statistic|Std. Error|
-+----------------------------------------------------+---------+----------+
-|mtbf_ln Mean | 1.88| .19|
-| 95% Confidence Interval for Mean Lower Bound| 1.47| |
-| Upper Bound| 2.29| |
-| 5% Trimmed Mean | 1.88| |
-| Median | 2.09| |
-| Variance | .54| |
-| Std. Deviation | .74| |
-| Minimum | .49| |
-| Maximum | 3.28| |
-| Range | 2.79| |
-| Interquartile Range | .92| |
-| Skewness | -.16| .58|
-| Kurtosis | -.09| 1.12|
-+----------------------------------------------------+---------+----------+
-@end example
-@end cartouche
-@caption{Testing for normality using the @cmd{EXAMINE} command and applying
-a logarithmic transformation.
-The @var{mtbf} variable has a large positive skew and is therefore
-unsuitable for linear statistical analysis.
-However the transformed variable (@var{mtbf_ln}) is close to normal and
-would appear to be more suitable.}
-@end float
-
-