# Range_ Median_ Mean_ Mode

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```					Range, Median, Mean, Mode

7-5
246-267
Range
• The difference between the greatest number
and the least number
Test     1       2     3       4      5

Score    75      83    92      70     85

Greatest 92
Least70
92-70=22
Median
• The middle number when the data is listed
from least to greatest

Test      1            2            3         4    5

Score     75           83           92        70   85

Least to Greatest70, 75, 83, 85,92
Median83
• If you have an even number of data
48, 56, 63, 64, 64, 65
– Divide the sum of the 2 middle numbers by 2
– 63 +64=127
2 =2
The median is 63 ½
Mean
• The average of the data set
48, 56, 63, 64, 64, 65
• To find the average:
– Add the numbers in the set and divide by the
48+56+ 63+ 64+ 64+ 65=360
360÷6=60
The mean for this data set is 60
Mode
• The number that occurs most frequently
48, 56, 63, 64, 64, 65
• The mode for this set is 64

• Sometimes there is more than one mode
or there is no mode if there is no mode
write “no mode” not “0”
Find the range, median, mean,
and mode for each
•   96, 88, 81, 80, 85
•   16
•   85
•   86
•   No mode
•   31, 59, 73, 96, 30, 96, 118
•   88
•   73
•   71 6/7
•   96

```
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 views: 0 posted: 2/14/2012 language: pages: 7