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There is no single definition of an outlier, but they are observations that are way out of line in comparison to other observations - either too small or too large.
One way is to first find the inter-quartile range (IQR). Now multiply this by 1.5 and add it to the upper quartile and subtract it from the lower one. Any point beyond these values is an outlier.
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What does the whisker in a box-and-whisker plot represent?
The whiskers mark the ends of the range of figures - they are the furthest outliers. * * * * * No. Outliers are not part of a box and whiskers plot. The whiskers mark the ends of the minimum and maximum observations EXCLUDING outliers. Outliers, if any, are marked with an X.
Can you safely remove outliers from scatter charts?
You can only do it if either the outliers are way out - so far that they must be odd, so far that there can be no argument, no need for statistics to prove them to be outliers, or you need to prove that they are outliers using statistics - something like Grubb's test. To do that, the simplest way is software.
Can outliers affect the symmetry of the data?
an outliers can affect the symmetry of the data because u can still move around it
How do you find clusters on a box and whisker plot?
You cannot, unless they are all outliers, and the plot records outliers separately.
Should you put outliers on a graph?
no
