IQR, Upper and lower limits

label Statistics
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65 72 68 64 60 55 73 71 52 63 61 74 69 67 74 50 4 75 67 62 66 80 64 65

Multiply the IQR by 1.5 and find the lower and upper limits. The IQR is 10. 

Jan 28th, 2015

1st quartile =( 6th + 7th)/2 from ordered list =  61.5
3rd quartile = (18th + 19th)/2 from ordered list = 71.5
IQR = 10


10*1.5 = 15

so, Upper range = 3rd quartile  - 15 = 71.5 + 15 = 76.5
Lower range = 1st quartile - 15 = 61.5 - 15  = 46.5





Jan 28th, 2015

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Jan 28th, 2015
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