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An ecologist who was studying starfish populations collected starfish of the species Pisaster was interested in the distribution of sizes of starfish on a certain shoreline. One measure of size is "arm length." Below is a cumulative relative frequency distribution for the arm length, in centimeters, of 102 Pisaster individuals. Cumulative relative frequency (%) e 100- 80 60- 40- 20- 0 T T 10 12 14 16 18 20 Pisaster arm length (cm) What are the approximate values of the median and interquartile range of this distribution? O a median = 13; interquartile range = 4 Ob median = 13; interquartile range = 13 and 16 Oc median 15; interquartile range 12 and 16 Od median = 13; interquartile range = 3 median = 15; interquartile range = 4 6 8

An ecologist who was studying starfish populations collected starfish of the species Pisaster was interested in the distribution of sizes of starfish on a certain shoreline. One measure of size is "arm length." Below is a cumulative relative frequency distribution for the arm length, in centimeters, of 102 Pisaster individuals. Cumulative relative frequency (%) e 100- 80 60- 40- 20- 0 T T 10 12 14 16 18 20 Pisaster arm length (cm) What are the approximate values of the median and interquartile range of this distribution? O a median = 13; interquartile range = 4 Ob median = 13; interquartile range = 13 and 16 Oc median 15; interquartile range 12 and 16 Od median = 13; interquartile range = 3 median = 15; interquartile range = 4 6 8

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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An ecologist who was studying starfish populations collected starfish of the species Pisaster was interested in the distribution of sizes of starfish on a certain shoreline. One measure of size is "arm length." Below is a cumulative relative frequency distribution for the arm length, in centimeters, of 102 Pisaster individuals. Cumulative relative frequency (%) Oc Od O e 100- 80- 60- 40- 20- 0 12 14 16 18 20 Pisaster arm length (cm) What are the approximate values of the median and interquartile range of this distribution? O a median = 13; interquartile range = 4 O b median = 13; interquartile range = 13 and 16 median = 15; interquartile range = 12 and 16 median = 13; interquartile range = 3 median = 15; interquartile range = 4 6 8 10
Transcribed Image Text:An ecologist who was studying starfish populations collected starfish of the species Pisaster was interested in the distribution of sizes of starfish on a certain shoreline. One measure of size is "arm length." Below is a cumulative relative frequency distribution for the arm length, in centimeters, of 102 Pisaster individuals. Cumulative relative frequency (%) Oc Od O e 100- 80- 60- 40- 20- 0 12 14 16 18 20 Pisaster arm length (cm) What are the approximate values of the median and interquartile range of this distribution? O a median = 13; interquartile range = 4 O b median = 13; interquartile range = 13 and 16 median = 15; interquartile range = 12 and 16 median = 13; interquartile range = 3 median = 15; interquartile range = 4 6 8 10
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