A student decides to measure the drag coecient of an airfoil at 0 angle of attac

Question

A student decides to measure the drag coecient of an airfoil at 0 angle of attack. He obtains the following measurements:

(a) Are there any official outliers?

(b) After all the outliers have been removed, calculate the sample mean and sample standard deviation

that the student should be using for the lift coecient.

A student decides to measure the drag coecient of an airfoil at 0 angle of attack. He obtains the following measurements: Are there any official outliers? After all the outliers have been removed, calculate the sample mean and sample standard deviation that the student should be using for the lift coecient.

Explanation / Answer

a). yes there are ouliers such as 0.356 and 0.337

b). after all the outliesrs have been removed

remaining smaple are 0.346, 0.345, 0.348, 0.349,0.352,0.351, 0.347

so its mean is ( 0.346+ 0.345+ 0.348+ 0.349+0.352+0.351+0.3470/7

=2.438/7

=0.348

and sample standard deviation is 2.3733*10^-3

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