If you were a business person and you found that your monthly gross sales over the past two years produced a negative skew, why would that be better than a distribution of monthly sales that produced a positive skew?
The graphs of monthly gross sales could be as follows:
From a business perspective, the graph with a positive skew would mean that the gross sales were at its peak in the beginning and it has slowly decreased over time reaching its minimum after two years.
The graph with a negative skew would mean that the monthly gross sales have increased since two years and have reached a maximum lately and still has not reached its minimum. Therefore, negative skew is better.
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