A) 295
B) 872

question 10

Multiple Choice

$$\begin{array}{l}\text { Approximate the population variance given the following frequency distribution. }\\\begin{array} { c c } \hline \text { Class } & \text { Frequency } \\\hline 0 - 19 & 15 \\20 - 39 & 13 \\40 - 59 & 8 \\60 - 79 & 10 \\80 - 99 & 10 \\\hline\end{array}\end{array}$$

• A) 29.5
• B) 872.6
• C) 29.3
• D) 857.0

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Definitions:

PsycINFO

A database that provides abstracts and citations to the scholarly literature in the field of psychology and related disciplines.

Psychology

The scientific study of the mind and behavior, encompassing various aspects of conscious and unconscious experience as well as thought and feelings.

Research Literature

A collection of studies, findings, and scholarly articles on a particular subject within the realm of academic inquiry.

Placebo Treatment

A sham or inert treatment given to a control group in experiments to assess the psychological impact of receiving treatment.