Find the mode(s) of the data. 3 5 8 9 There is no mode.
2 answers:
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The easiest way to do this is to put each term in the numerator over the denominator and do the division/reducing for each one. Like this: 
. The first term reduces to 
, the second to 
, and the third to 3. Putting them all together with the signs in between we have 