Mind on Statistics
Mind on Statistics
5th Edition
ISBN: 9781285463186
Author: Jessica M. Utts, Robert F. Heckard
Publisher: Brooks Cole
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Concept explainers

Inverse Normal Distribution
The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of tw…
Mean, Median, Mode
It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency o…
Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow compar…
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Textbook Question
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Chapter 2, Problem 2.108E

Remember that a resistant statistic is a numerical summary whose value is not unduly influenced by an outlier of any magnitude. Is the standard deviation a resistant statistic? Justify your answer by giving an example of a small dataset, and then adding a very large outlier and noting how the standard deviation is affected.

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Chapter 2, Problem 2.107E
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Chapter 2 Solutions

Mind on Statistics

Ch. 2 - A sociologist assembles a dataset consisting of...Ch. 2 - Suppose that in a national survey of 620 randomly...Ch. 2 - In each situation, explain whether it would be...Ch. 2 - In each situation, explain whether it would be...Ch. 2 - For each of the following statistical summaries,...Ch. 2 - Prob. 2.6ECh. 2 - Prob. 2.7ECh. 2 - Read Case Study 1.5 (p. 4) about prayer and blood...Ch. 2 - Prob. 2.9ECh. 2 - Read Case Study 1.6 (p.5) about aspirin and heart...
Ch. 2 - Prob. 2.11ECh. 2 - For each of the following characteristics of an...Ch. 2 - Prob. 2.13ECh. 2 - Prob. 2.14ECh. 2 - Prob. 2.15ECh. 2 - Prob. 2.16ECh. 2 - Prob. 2.17ECh. 2 - For each pair of variables, specify which variable...Ch. 2 - Prob. 2.19ECh. 2 - Prob. 2.20ECh. 2 - Prob. 2.21ECh. 2 - Prob. 2.22ECh. 2 - Prob. 2.23ECh. 2 - Prob. 2.24ECh. 2 - Prob. 2.25ECh. 2 - Prob. 2.26ECh. 2 - Table 2.1 (P. 20) summarized frequency of seatbelt...Ch. 2 - Prob. 2.28ECh. 2 - Prob. 2.29ECh. 2 - Refer to Exercise 2.27. Students also were asked...Ch. 2 - Prob. 2.31ECh. 2 - Prob. 2.32ECh. 2 - Prob. 2.33ECh. 2 - Prob. 2.34ECh. 2 - Prob. 2.35ECh. 2 - Prob. 2.36ECh. 2 - This is the same as Exercise ¡.1. The five-number...Ch. 2 - Prob. 2.38ECh. 2 - Prob. 2.39ECh. 2 - Prob. 2.40ECh. 2 - Prob. 2.41ECh. 2 - Prob. 2.42ECh. 2 - Prob. 2.43ECh. 2 - Hand et al. (1994, p. 148) provide data on the...Ch. 2 - The following stem-and-leaf plot is for the mean...Ch. 2 - Prob. 2.46ECh. 2 - Prob. 2.47ECh. 2 - Prob. 2.48ECh. 2 - Prob. 2.49ECh. 2 - Prob. 2.50ECh. 2 - Prob. 2.51ECh. 2 - Prob. 2.52ECh. 2 - Prob. 2.53ECh. 2 - Prob. 2.54ECh. 2 - Prob. 2.55ECh. 2 - Prob. 2.56ECh. 2 - Prob. 2.57ECh. 2 - Prob. 2.58ECh. 2 - Prob. 2.59ECh. 2 - Prob. 2.60ECh. 2 - Prob. 2.61ECh. 2 - Students in a statistics class wrote as many...Ch. 2 - Prob. 2.63ECh. 2 - The following cholesterol levels for n = 20...Ch. 2 - The weights (in pounds) for nine men on the...Ch. 2 - A set of eight systolic blood pressures follows:...Ch. 2 - Prob. 2.67ECh. 2 - Prob. 2.68ECh. 2 - Prob. 2.69ECh. 2 - Prob. 2.70ECh. 2 - Prob. 2.71ECh. 2 - Prob. 2.72ECh. 2 - Prob. 2.73ECh. 2 - The football team at the school of one of the...Ch. 2 - Prob. 2.75ECh. 2 - Prob. 2.76ECh. 2 - Prob. 2.77ECh. 2 - Prob. 2.78ECh. 2 - Prob. 2.79ECh. 2 - Prob. 2.80ECh. 2 - Prob. 2.81ECh. 2 - Prob. 2.82ECh. 2 - Prob. 2.83ECh. 2 - Prob. 2.84ECh. 2 - Prob. 2.85ECh. 2 - Prob. 2.86ECh. 2 - Prob. 2.87ECh. 2 - Suppose that the distribution of speeds at an...Ch. 2 - Prob. 2.89ECh. 2 - Prob. 2.90ECh. 2 - Prob. 2.91ECh. 2 - Prob. 2.92ECh. 2 - Prob. 2.93ECh. 2 - The data for Exercise 2.66 was this set of...Ch. 2 - Prob. 2.95ECh. 2 - If you learn that your score on an exam was 80 and...Ch. 2 - The scores on the final exam in a course with a...Ch. 2 - Prob. 2.98ECh. 2 - Prob. 2.99ECh. 2 - Prob. 2.100ECh. 2 - Head circumferences of adult males have a...Ch. 2 - Prob. 2.102ECh. 2 - Suppose verbal SAT scores for students admitted to...Ch. 2 - Prob. 2.104ECh. 2 - Prob. 2.105ECh. 2 - Prob. 2.106ECh. 2 - Prob. 2.107ECh. 2 - Remember that a resistant statistic is a numerical...Ch. 2 - Prob. 2.109ECh. 2 - Prob. 2.110ECh. 2 - Prob. 2.111ECh. 2 - Prob. 2.112ECh. 2 - Prob. 2.113ECh. 2 - Prob. 2.114ECh. 2 - Prob. 2.115ECh. 2 - Prob. 2.116ECh. 2 - Prob. 2.117ECh. 2 - Prob. 2.118ECh. 2 - Prob. 2.119ECh. 2 - Prob. 2.120ECh. 2 - Prob. 2.121ECh. 2 - Prob. 2.122ECh. 2 - The data for 103 women’s right handspans are shown...Ch. 2 - Prob. 2.124ECh. 2 - Prob. 2.125ECh. 2 - Prob. 2.126ECh. 2 - Prob. 2.127ECh. 2 - Prob. 2.128ECh. 2 - Prob. 2.129ECh. 2 - Prob. 2.130ECh. 2 - Prob. 2.131ECh. 2 - Prob. 2.132ECh. 2 - Prob. 2.133ECh. 2 - Prob. 2.134ECh. 2 - Prob. 2.135ECh. 2 - Explain why women’s heights are likely to have a...Ch. 2 - Prob. 2.137ECh. 2 - Use the pennstate 1 dataset on the companion...
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