Question

the mean of the median, the mode and the range of the following data 84, 56, 39, 45, 54, 39, 56, 54, 84, 21, 77, 56 is

Answer 1

mean :

sum of observations / no of observations

84 +56+ 39+45+54+39+56+54+84+21+77+56 / 12

= 665 /12

= 55.4 approx

median :

= n/2+1

=n=12

= 12 / 2+1

=6+1

=7

mode :

the mode in the given following is 84

range :

range = maximium value - minimum value

r= 84-21

r= 63

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Answer 2

$range = highest \: value - lowest \: value \\ \: \: \: \: \: \: \: \: \: \: \: = 84 - 21 \\ \: \: \: \: \: \: \: \: \: \: \: = 63 \\ mode = 56 \\ mean = 665 \div 12 \\ \: \: \: \: \: \: \: \: \: \: \: \: =$