A Survey Asked 857 People How Many Times Per Week

question 104

Multiple Choice

A survey asked 857 people how many times per week they dine out at a restaurant. The results are presented in the following table.
$\begin{array}{cc}\hline \text { Number of Times } & \text { Frequency } \\\hline 0 & 136 \\1 & 254 \\2 & 233 \\3 & 104 \\4 & 74 \\5 & 21 \\6 & 28 \\7 & 7 \\\hline \text { Total } & 857\end{array}$

Consider the 857 people to be a population. Let $X$ be the number of times per week a person dines out for a person sampled at random from this population. Compute the standard deviation.

• A) 2.1
• B) 1.9
• C) 2.3
• D) 1.5

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Definitions:

Focus Groups

A qualitative research method involving a small, diverse group of people whose reactions to specific discussions or ideas are studied.

Interviews

A qualitative research method involving direct, face-to-face, or virtual conversation between the interviewer and interviewee(s) to gather in-depth data on a subject.

Incomplete Observer

A research role where the observer does not fully participate or reveal their observer status to the subjects being studied.

Relationships

The ways in which two or more concepts, objects, or people are connected, or the state of being connected.