The best measure of center for this data is 21 that is mode or median and this can be determined by checking the deviation from the lowest number and the highest number.
Given :
Table-
Year 2011 2012 2013 2014 2015
Number of Cakes Sold 21 28 19 26 21
First determine the mean, mode, and median of the given data.
[tex]\rm Mean = \dfrac{Sum\; of \;the \;terms}{Number\;of \; terms}[/tex]
[tex]\rm Mean = \dfrac{21+28+19+26+21}{5}[/tex]
[tex]\rm Mean = \dfrac{115}{5}[/tex]
Mean = 23
The median of the given data is 21.
The mode of the given data is 21.
Now, check the deviation from the lowest number and the highest number. The best measure of center for this data is 21.
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https://brainly.com/question/1957976