Approximate the Variance and Standard Deviation of a Variable from Grouped

question 6

Multiple Choice

Approximate the Variance and Standard Deviation of a Variable from Grouped Data
-For the following data set, approximate the sample standard deviation of unused vacation days. $\begin{array}{c|c}\text { Days } & \text { Frequency } \\\hline 1-2 & 9 \\3-4 & 12 \\5-6 & 8 \\7-8 & 5 \\9-10 & 4\end{array}$

• A) \(2.6\) days
• B) \(2.5\) days
• C) \(6.5\) days
• D) \(6.6\) days

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Definitions:

Maintenance Department

A functional area within an organization responsible for maintaining and repairing the organization's equipment, facilities, and systems to ensure they are safe and efficient.

Operating Departments

Divisions or units within a business that are responsible for carrying out the primary business activities.

Departmental Contribution

The amount of profit or revenue that a specific department within a company generates, minus its direct costs.

Revenues

The total amount of income generated by the sale of goods or services related to a company's primary operations.