A Company Had 80 Employees Whose Salaries Are Summarized in the Frequency

question 35

Multiple Choice

A company had 80 employees whose salaries are summarized in the frequency distribution below. Find the standard deviation. $$\begin{array} { r | c } \text { Salary (dollars) } & \text { Employees } \\\hline 5,001 - 10,000 & 19 \\10,001 - 15,000 & 14 \\15,001 - 20,000 & 12 \\20,001 - 25,000 & 16 \\25,001 - 30,000 & 19\end{array}$$

• A) $7967.5
• B) $7588.1
• C) $8195.1
• D) $8422.8

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Definitions:

Day of Week

Indicates one of the seven named divisions in a week, ranging from Sunday to Saturday.

Interaction Effect

In statistics, it refers to a situation in which the effect of one independent variable on a dependent variable changes depending on the level of another independent variable.

Marginal Mean

The mean of the subset of observations that contribute to the marginal total, providing insight into specific group effects within a larger dataset.

Factorial Designs

Experimental designs used to evaluate the effects of two or more factors by varying them simultaneously and systematically.