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mean,median and mode

0 votes

Find the mean, median, and mode(s) of the data set.

15, 18, 25, 27, 38, 39, 41, 45

asked Oct 31, 2013 in ALGEBRA 2 by linda Scholar

1 Answer

0 votes

15, 18, 25, 27, 38, 39, 41, 45

Mean is the sum of the values in the data set divided by the number of data 

Mean = (15+18+25+27+38+39+41+45)/8                                                       
                  = 248/8                                 (15+18+25+27+38+39+41+45 = 248 )
                = 31
Mean of the given data is 31

The median is the middle number. In this example, the numbers are already listed in numerical order, so I don\'t

have to rewrite the list. But there is no \"middle\" number, because there are an even number of numbers. In this

case, the median is the mean (the usual average) of the middle two values:

(27+38)/2

= 32.5
The mode is the number that is repeated most often,but all the numbers in this list appear only once, so there is no mode.

The largest value in the list is 45, the smallest is 15, and their difference is 30, so the range is 30.

mean: 30

median: 32.5

mode: none

range: 30.

answered Oct 31, 2013 by joly Scholar

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