Unit sales for new product ABC have varied in the first seven months of this year as follows:
Month | Jan | Feb | Mar | Apr | May | Jun | Jul |
---|---|---|---|---|---|---|---|
Unit Sales | 295 | 218 | 374 | 365 | 281 | 234 | 304 |
What is the (sample) skewness of the data?
Please round your answer to the nearest hundredth.
Note that the correct answer will be evaluated based on the full-precision result you would obtain using Excel.
The given data is,
The formula for skewness is given as,
where x is mean,
s is standard deviation
Therefore the measure of skewness is given as,
Note : the formula used in excel is,
Month Unit Sales Jan 295 218 374 365 Feb Mar Apr May Jun Jul 281 234 304
37 - Median Sk S
=(3* (AVERAGE(J13:J19)-MEDIAN(J13:J19)))/STDEV.P(J13:319)
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