Question

Question 1: Outlier detection

Draw boxplot and detect outliers

201,199, 269, 236, 278, 271, 303, 291, 283, 301, 341

Answer 1

201, 199, 269, 236, 278, 271, 303, 291, 283, 301, and 341

Therefore n = 11

  

Hence it is clear that any range above 333.5 or below 201.5 are outliers. Hence in the data series 199, 201, 236, 269,271,278,283,291, 301, 303, 341, outliers are 199, 201 and 341. These 3 values which lies on either of the extremes can be considered abnormal and should be discarded from the entire series so that any analysis made on this series is not influenced by these extreme values. So the data series that should be considered for further observation or study after discarding the outliers are as below.

236, 269,271,278,283,291, 301, 303.

Hope this may help you

Thank you ??