Timeline for Density plot narrow peaks and mean far away from peaks
Current License: CC BY-SA 3.0
3 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 23, 2014 at 19:11 | vote | accept | add-semi-colons | ||
| Oct 23, 2014 at 8:32 | comment | added | Nick Cox | Skewness should be contrasted with symmetry, rather than normality. Advice received earlier to the effect that means only apply when data are normally distributed is quite unsound. Statistical people routinely apply means not only to symmetrical distributions other than the normal but also to skewed distributions such as the Poisson, gamma or exponential. It's just that the mean is necessarily pulled towards high values when right skewness is present (and to low values when left skewness is present) and can sometimes be misleading if there are outliers. So, plot the data, as here. | |
| Oct 23, 2014 at 5:55 | history | answered | mcastillon | CC BY-SA 3.0 |