5.1 Calculate the mean of x. 5.2 Calculate the median and mode of x. 5.3 Using the mean and median, comment on the shape of the distribution of x. 5.4 Calculate the standard deviation of x. 5.5 calculate the 1st quartile of x.

5.1 Calculate the mean of x. 5.2 Calculate the median and mode of x. 5.3 Using the mean and median, comment on the shape of the distribution of x. 5.4 Calculate the standard deviation of x. 5.5 calculate the 1st quartile of x.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.5: Comparing Sets Of Data

Problem 11PPS

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Question

Consider the following sample of size 150.

x Frequency

25 20

35 30

50 45

65 30

75 20

80 5

150

5.1 Calculate the mean of x.

5.2 Calculate the median and mode of x.

5.3 Using the mean and median, comment on the shape of the distribution of x.

5.4 Calculate the standard deviation of x.

5.5 calculate the 1^st quartile of x.

Definition Definition Measure of central tendency that is the value that occurs most frequently in a data set. A data set may have more than one mode if multiple categories repeat an equal number of times. For example, in a data set with five item—3, 5, 5, 29, 473—the mode is 5 because it occurs twice and no other value occurs more than once. On a histogram or bar chart, the element with the highest bar represents the mode. Therefore, the mode is sometimes considered the most popular option. The mode is useful for nominal or categorical data (e.g., the most common color car that users purchase), but it is problematic for continuous data because it is more likely not to have any value that is more frequent than the other.

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