Range = Highest value - Lowest value
= 20 - 3
= 17
Mean =
[tex]\frac{Sum\text{ of all the items}}{total\text{ number of items}}\text{ = }\frac{20\text{ + 13 + 13 + 6 + 3 +12 + 7 + 20 + 20}}{9}=\text{ }\frac{114}{9}\text{ = }\frac{38}{3}[/tex]Median = Middle value when the items are arranged in either increasing or decreasing order
Arranging the items In increasing order we have:
3, 6, 7, 12, 13, 13, 20, 20, 20.
Hence the median is the 5th item = 13
Mode = The most occuring item
The most occuring item or number is 20 (occuring three times)
