Name________________________

MEAN/MEDIAN/MODE/RANGE #6--KEY

Directions: Calculate the mean, median, mode, and range for each set of numbers below.  Round all answers to the nearest tenth.  To put the numbers in the correct order, you will have to add some zeroes as decimal place holders

To find the mean of a set of numbers, add all of the data together, then divide that sum by the amount of numbers in the set.  To find the median, list the numbers from least to greatest and select the middle value.  The mode is the number that appears most often in the set.  There could be more than one mode, or there could be no mode.  To find the range, take the largest value in the set minus the smallest value.

Example:  Here are the numbers in the set (3.25, 3.1, 3.3, 4, 3.75)

Mean = (3.25 + 3.1 + 3.3 + 4 + 3.75) / 5 = 17.4/5  = 3.48 or 3.5                   Mode = No mode

Median = (3.10, 3.25, 3.30, 3.75, 4.00) = 3.30 or 3.3                                    Range = 4 – 3.1 = 0.9

MEAN               MEDIAN               MODE               RANGE

1)         (5.2, 6.25, 4.75, 4.7, 8)                                  _5.8 (5.78)_          __5.2___                _none_               __3.3___

2)         (3.5, 3.1, 3.1, 3.3, 3.6, 3.1, 3.4, 3.2)              3.3 (3.2875)           _3.25___               __3.1__              __0.5___

3)         (0.1, 0.124, 0.11, 1.0)                                    0.3 (0.3335)           __0.117_               __none__          __0.9___

4)         (9, 8.75, 8, 9, 8.7)                                          __8.69_                 _8.75____             ___9___            __1_____

5)         (0.5, 0.05, 0.005. 5, 0.05)                              1.1 (1.121)             _0.050___            _none_                5 (4.995)_

6)         (21, 22, 12, 24, 20, 10, 9, 20.6)                     17.3(17.325)         _20.3____               _none_              __15___

7)         (0.2, 1, 2, 4, 4, 0.02)                                      1.9 (1.87)             __1.5_____             ___4___            _4 (3.98)_

8)         (100, 99, 95, 100, 95, 99.5)                           98.1 (98.083)       __99.25___            ___95__             ___5____

9)         (6.5, 5.6, 6.5, 5, 6, 0.65)                                5.0 (5.042)           __5.8_____             _6.5_                 5.9 _(5.85)

10)       (5.4, 4.5, 4.4, 5.5, 4.5, 5.4, 4.4, 4.4)             4.8(4.8125)          __4.5_____             __4.4__             _1.1__