Question

Retailers | Sales |

a | 1700 |

c | 12700 |

e | 7739 |

k | 1863 |

k | 3400 |

m | 1757 |

r | 8637 |

s | 2150 |

walgreen | 11660 |

w | 7250 |

p | 5000 |

a: list the quartiles

b: find the interquartile range

c: identify the outlier cutoffs as well as the outliers

d: Draw a boxplot

Answer #1

a)

Entire data set (sorted):

1700 ; 1757 ; 1863 ; 2150 ; 3400 ; 5000 ; 7250 ; 7739 ; 8637 ;
11660 ; 12700

Minimum = 1700

Q1 = First Quartile = Middle of First Half of Data Set = 1863

Q2 = Median = Second Quartile = Middle of Entire Data Set =
5000

Q3 = Third Quartile = Middle of Second Half of Data Set =
8637

Maximum = 12700

b)

Interquartile range (xU-xL):8637 - 1863 = 6774

c) A data value is considered to be an outlier if it
is less than the lower fence or greater than the upper fence.

List of Outlier(s):

No Outliers

d)

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