The following data are the ages (in years) at diagnosis for 20 patients under treatment for meningitis:

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18 18 25 19 23 20 69 18 21 18

20 18 18 20 18 19 28 17 18 18

(a) Calculate and interpret the values of the sample mean, variance, and standard deviation.

(b) Compute the 10% trimmed mean and the sample median. Why might you recommend either one of these two statistics as measures of center rather than the sample mean?

(d) Illustrate the center, spread, and symmetry or skewness of this data using a horizontal modified boxplot.

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Introductory Statistics

ISBN: 978-0470904107

8th edition

Authors: Prem S. Mann

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Posted Date: Jan 09, 2021 01:53 PM

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The following data are the ages (in years) at diagnosis for 20 patients under treatment for meningitis:

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Answer of all parts are given below a Calculate and interpret the values of the sample mean variance ... View the full answer

Introductory Statistics

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