Question

Consider the following observations on shear strength (MPa) of a joint bonded in a particular manner.

21.2	40.4	16.4	73.6	36.6	110.0
30.0	4.4	33.1	66.7	81.5

a) What are the values of the fourths? (Enter your answers to two decimal places.)

lower fourth		MPa
upper fourth		MPa

What is the value of f_s?
= MPa

Comment on its features. (Select all that apply.)

The variation seems quite large.

The data is symmetric.

There are outliers.

There is a slight negative skew to the data.

The variation is small.

There are no outliers.

There is a slight positive skew to the data.

(c) How large or small does an observation have to be to qualify as an outlier? (Round your answers to one decimal place.)

below =	MPa
above =	MPa

How large or small does an observation have to be to qualify as an extreme outlier? (Round your answers to one decimal place.)

below	MPa
above	MPa

(d) By how much could the largest observation be decreased without affecting f_s?
= MPa

Answer 1