Maurice Tutor

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Expertise:
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Algebra,Applied Sciences,Biology,Calculus,Chemistry,Economics,English,Essay writing,Geography,Geology,Health & Medical,Physics,Science Hide all
Teaching Since: May 2017
Last Sign in: 398 Weeks Ago, 6 Days Ago
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Education

  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

Experience

  • Professor
    Phoniex University
    Oct-2001 - Nov-2016

Category > Computer Science Posted 18 Sep 2017 My Price 7.00

data collection errors

Expand Your Knowledge: Outliers Some data sets include values so high or so low that they seem to stand apart from the rest of the data. These data are called outliers. Outliers may represent data collection errors, data entry errors, or simply valid but unusual data values. It is important to identify outliers in the data set and examine the outliers carefully to determine if they are in error. One way to detect outliers is to use a box-and-whisker plot. Data values that fall beyond the limits

Lower limit: Q1- 1.5 x (IQR)

Upper limit: Q3+ 1.5 x (IQR)

where IQR is the interquartile range, are suspected outliers. In the computer software package Minitab, values beyond these limits are plotted with asterisks (*). Students from a statistics class were asked to record their heights in inches.

The heights (as recorded) were

65

72

68

64

60

55

73

71

52

63

61

74

69

67

74

50

4

75

67

62

66

80

64

65

(a) Make a box-and-whisker plot of the data.

(b) Find the value of the interquartile range (IQR).

(c) Multiply the IQR by 1.5 and find the lower and upper limits.

(d) Are there any data values below the lower limit? above the upper limit? List any suspected outliers. What might be some explanations for the outliers?

Answers

Maurice Tutor
(5)
Status NEW Posted 18 Sep 2017 09:09 PM My Price 7.00

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