To determine the frequency of brown-haired people in the provided data, we must first clarify the information given. The table lists people's names, ages, genders, and eye colors. However, it appears that you meant to refer to the eye color, so I'll assess the frequency of brown-eyed individuals based on the data.
From the sample:
- Bob: brown
- Cathy: blue
- Samantha: brown
- Robin: brown
The brown-eyed individuals are:
- Bob
- Samantha
- Robin
Counting them, we see that there are 3 people with brown eyes in this sample.
Therefore, the frequency of brown-eyed people in the sample is 3.