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what is the mode of the following data 18, 17, 12, 14, 8, 21, 10, 11, 19, 20, 10, 5, 17, 12, 10, 20
14, 24.5, 28, 34.5 and 41
They are: 10 12 14 and 16
The variance of this data set is 22.611
The variance is 10.
14 Apex
26.66666667
if you rearrange the data set in increasing order : 10 13 14 19 24 28 60 the number that is in the middle is : 19
The variance is: 1.6709957376e+13
26.66...
In order to find the weighted mean of this set of the data, we need to know the weight for each data in the set, and this information is not given in your question.Definition: When each number ai is to have weight wi, the weighted mean is equal to(w1a1+w2a2 + ... + wnan)/(w1 + w2 + ... + wn).
mean =(5+9+10+2+7+9+14)/7=8 s^2 = Variance = (1/7){(5-8)^2+(9-8)^2+(10-8)^2+(2-6)^2+(7-8)^2+(9-8)^2+(14-8)^2}=14.6666 Standard deviation =s= sqrt(14.6666)=3.8297
The variance of 14 14 20 38 47 48 57 = 317.6667
There are 4 possible answers: (7, 7, 10, 13, 13) (7, 8, 10, 12, 13) (7, 9, 10, 11, 13) (8, 8, 10, 10 14).
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