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A researcher was interested in information regarding post-traumatic seizures (PTS) among patients who have suffered from a traumatic brain injury (TBI). She surveyed a variety of ages and asked the subjects if they have suffered from a post-traumatic seizure. The results in the following graph below.

The requested supplement was not found.

How could one describe the shape of this graph?


Roughly symmetric.


Right skewed.


Left skewed.


Unable to tell since not all age groups were surveyed.


Unable to tell since the variables are categorical.

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