Chapter 3 Homework

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University of Houston, Downtown *

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Computer Science

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Feb 20, 2024

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Chapter 3 Homework (1) In the sleeping_pill data set, is extra_hrs a quantitative or categorical variable? If quantitative, is it discrete or continuous? Click here to enter text. (2) Based on the dotplot and/or histogram in the applet, how would you describe the shape of the data? For instance, is it symmetrical, nearly symmetrical, skewed, slightly skewed, positively or negatively skewed? Click here to enter text. (3) What is the mean of extra_hrs ? Click here to enter text. (4) What is the median of extra_hrs ? Click here to enter text. (5) How many scores are larger than the median? Click here to enter text. (6) If you didn’t have a graph, what could you tell about the shape of the distribution just from knowing the values of the mean and median? Click here to enter text. (7) What happens to the mean of a data set when a new score which is larger than the mean is added? Click here to enter text. (8) How was this illustrated in the applet? Click here to enter text. (9) What happens to the mean of a data set when a score is removed? What difference does it make if the removed score is larger or smaller than the mean? Click here to enter text. (10) How was this illustrated in the applet?

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