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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?

A

Roughly symmetric.

B

Right skewed.

C

Left skewed.

D

Unable to tell since not all age groups were surveyed.

E

Unable to tell since the variables are categorical.

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