Approximate the Variance and Standard Deviation of a Variable from Grouped

question 94

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 emails per day. $\begin{array}{c|c}\text { Emails (per day) } & \text { Frequency } \\\hline 8-11 & 18 \\12-15 & 23 \\16-19 & 38 \\20-23 & 47 \\24-27 & 32\end{array}$

• A) \(5.1\) emails
• B) \(4.0\) emails
• C) \(25.8\) emails
• D) \(19.3\) emails

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Definitions:

Straight-Line Method

A method of calculating depreciation of an asset where its cost is evenly spread over its useful life.

Residual Value

The estimated value of an asset at the end of its useful life or lease term.

Depreciation Expense

the systematic allocation of the cost of a tangible asset over its useful life.

Goodwill

An intangible asset that arises when a business is acquired for more than its fair value, attributed to factors like reputation, brand, and customer relationships.