Question 195615
First sort the numbers into ascending order (from least to greatest):

3,4,5,5,5,5,5,6,6,7,7,7,8,8,9


To find the mean, add up all of the numbers and divide the sum by the number of numbers (which in this case is 15).

{{{Mean=(3+4+5+5+5+5+5+6+6+7+7+7+8+8+9)/15=90/15=6}}}


So the mean is 6



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To find the median, count off about 7 spaces(it's close to half of the size of the list) until you hit the middle number. Now count count off about 7 spaces from the end of the list until you hit the middle.

3, 4, 5, 5, 5, 5, 5, {{{highlight(6)}}}, 6, 7, 7, 7, 8, 8, 9

Median=6


So the median is 6



Note: the mean does not always equal the median



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To find the mode, simply look for any repeating numbers. If there is one number that occurs more frequently than any other number, then that number is the mode.

Since 5 repeats itself 5 times (which is more frequent than any other number), the mode is 5



So the mode is 5