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

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