People were surveyed about their age and their favorite way to travel for vacation. The results are displayed below.Based on the graph, is there an association between age and preferred mode of transportation?

A) There is an association because the distribution of preferred transportation differs among the age groups.
B) There is an association because the distribution of preferred transportation is the same among the age groups.
C) There is no association because the distribution of preferred transportation differs among the age groups.
D) There is no association because the distribution of preferred transportation is the same among the age groups.

Travel Preferences by Age
0.9
0.8
0.7
Plane
0.6
0.5
Train
0.4
Automobile
0.3
0.2
0.1
Child
Teen
Adult
Senior
LO
O o o o o oO
Relative Frequency

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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