one below) b) The meas of the meck e(nches) ls clooer to A) 135 e) The standard

Question

one below) b) The meas of the meck e(nches) ls clooer to A) 135 e) The standard deviation of the neck sises (in inches) is cloeer 11) 145 C) 15. D) 16.5 one below) to (Choose one A) 1 B) 2 C) 3 D) 4 percentage of flights unmary for the parceage of Righs eancelbed each nonth between 7· Th·5-number 1995 and 2011 looks hie Min 91 Median Q3 Max 0540 1.312 1.730 2.540 0.240 a) Calculate the IQR, the lower and upprces (Must write down the formmulae you use b) Based on your answers in part a), are there any outliers in the data? Explain (C one below) A) Yes, because the minimum is below the lower fence, and the maximum is abo upper fence. B) Yes, because the minimum is above the lower fence, and the maximum is ab C) No, because the minimum is below the lower fence, and the maximum is b D) No, because the minimum is above the lower fence, and the maximum is upper fence upper fence upper fence

Explanation / Answer

Answer to the question is as follows:

a. I can use either mean or median as the distribution is symmettrical about ~14.75.

b. This is B) 14.5, as you can see that the distribution is symmetrical about the mode ( a value between 14 and 15).
Since the figure is symmetrical , mode=mean=median

c. Since ~68% of values ( or 136 out of 200 numbers) lie within 1 deviation, we have the fact that 1 deviation is the right answer

d. IQR = Q3-Q1 = 2.540-1.312 = 1.228
Lower fence = Q1 = 1.312
Upper fence = Q3 = 2.540

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