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put this solution on YOUR website!Mean : or average, sum the values and divide by total number of values.
Mean =

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Median : Order the set from smallest to largest, find the middle value.
(3,4,4,4,4,4,4,5,5,5,6,6,6,7,8)
Since there are 15 values, the 8th value is the median.
Median = 5.
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Mode: We can look at the data with a horizontal bar graph with each X representing one occurence.
The value with the most occurences is the mode.
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3:X
4:XXXXXX
5:XXX
6:XXX
7:X
8:X
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The mode is 4.