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

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 33PPS

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Question

Perform the given instructions below. Show the detailed computations for the numerical measures.

1. Represent the data using a steam and leaf plot.

2. Calculate the following from the ungrouped data presented:

a. Mean

b. Median

c. Mode

d. Range

e. Variance

f. Standard Deviation

g. Coefficient of Variation

h. 2nd quartile

i. 8th decile

j. 53th percentile

The following are the ages of all the employees of a small company.
28
34
40
42
46
29
36
41
44
47
32
35
40
45
27
33
38
40
45
48

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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