By Jay L. Devore
This concise ebook for engineering and sciences scholars emphasizes glossy statistical method and knowledge research. utilized records FOR ENGINEERS AND SCIENTISTS emphasizes software of how to genuine difficulties, with actual examples all through.
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Extra info for Applied Statistics for Engineers and Scientists
12 Copyright 2013 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). Editorial review has deemed that any suppressed content does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it. 3 Describing Distributions 31 What duration value c separates the smallest 50% of all x values from the largest 50%?
Only if the two separate histograms are “far apart” relative to their spreads will bimodality occur in the histogram of combined data. Thus a large data set consisting of heights of college students should not result in a bimodal histogram because the typical male height of about 69 inches is not far enough above the typical female height of about 64–65 inches. A histogram with more than two peaks is said to be multimodal. Of course, the number of peaks may well depend on the choice of class intervals, particularly with a small number of observations.
A histogram with more than two peaks is said to be multimodal. Of course, the number of peaks may well depend on the choice of class intervals, particularly with a small number of observations. The larger the number of classes, the more likely it is that bimodality or multimodality will manifest itself. 10(a) shows a Minitab histogram of the weights (lbs) of the 121 players listed on the rosters of the San Francisco 49ers and the New England Patriots as of November 28, 2012. 10(b) is a smoothed histogram (actually what is called a density estimate) of the data from the R software package.