The ages of the people in attendance at the showing of an award-winning foreign film are shown below. A graph shows

The ages of the people in attendance at the showing of an award-winning foreign film are shown below.
A graph shows age of attendees (in years) labeled 0 to 20 thru 61 to 80 on the horizontal axis and frequency on the vertical axis. 0 to 20 years at frequency 15. 20 to 40 years at frequency 40. 41 to 60 years at frequency 40. 61 to 80 years at frequency 15.
Which statement must be true according to the histogram?
The data is symmetrical, showing that the majority of the attendees were between the ages of 30 and 50.
The data is symmetrical, showing that the majority of the attendees were between the ages of 21 and 60.
The data is skewed, showing that the majority of the attendees were between the ages of 30 and 50.
The data is skewed, showing that the majority of the attendees were between the ages of 21 and 60.

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