17. How do you identify outliers in a dataset?

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Answered: 17. How do you identify outliers in a…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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You are a member of your local apartment association. Recently, this association has received complaints from renters in a particular area of the city who feel their rent is much higher than other areas. You investigate the complaint by collecting data from 4 different areas of the city (see table below). (a) Area A is the area that filed the complaint. Calculate the mean and the median of each area. (b) Do you feel Area A’s complaint is justified- why or why not? (c) Which do you think is a better measure to use in this situation - the mean or the median? Explain your reasoning. Area A Area B Area C Area D 1275 1124 1085 928 1110 954 827 1096 975 815 793 862 862 1078 1170 735 1040 843 919 798 997 745 943 812 1119 796 756 1232 908 816 765 1036 890 938 809 998 1055 1082 1020 914 860 750 710 1005 975 703 775 930
Assume time to failure density function (in months) of transplanted kidneys has a Weibull distribution with shape factor of 3 and scale of 6. Use R and answer the following questions (enter your answers with 3 decimal points):
State the mean and variance of the sampling distribution of the mean?
Are cigarettes bad for people? Cigarette smoking involves tar, carbon monoxide, and nicotine (measured in milligrams). The first two are definitely not good for a person's health, and the last ingredient can cause addiction. Use the data in the table above to make a stem-and-leaf display for milligrams of tar per cigarette smoked. (Enter NONE in any unused answer blanks.) Are there any outliers? A. Yes, 1.0 may be an outlier. B. No, there are no outliers. C. Yes, 29.8 may be an outlier.
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find sample variance of data 45,85,63,21,54,25,85,65
Q2. The 30% trimmed mean of the following data (120, 150, 170, 177, 178, 181, 198, 250, 450, 955} is: *
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Exercise 6. Below is a box plot of life expectancy in years for 142 countries in 2007. Life Expectancy (years) 80 70 60 50 40 (a) Using the box plot, estimate Q1, the median, Q3, and the IQR. Also, are there any potential outliers? (b) What characteristics of the distribution are apparent in the histogram, but not in the box plot? 2

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