Consider the sample: 9, 6, 7, 9, 10, 8
a) Find : the mean, the median, the mode
b) Find : the range, the quartiles Q1, Q3, the variance, the standard deviation.
c) Draw a box-plot for the given data set.
a ) Mean :
Median :
The observations need to be arranged in ascending order first :
6 , 7 , 8 , 9 , 9 , 10
We have 6 observations . The median is the average of the third and fourth observation .
Median = ( 8+9)/2=8.5
Mode = 9 ( the observation having the highest frequency )
b ) Range = 10 - 6 = 4
First quartile = 7.25
Third quartile = 9
Variance :
Standard deviation :
c ) The box plot is given below :
Consider the sample: 9, 6, 7, 9, 10, 8 a) Find : the mean, the median,...
(2) Consider the sample: 9, 6. 7, 9, 10, 8 a) Find: the mean, the median, the mode b) Find: the range, the quartiles Q1, Q3, the variance, the standard deviation c) Draw a box-plot for the given data set.
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