Compute the Standard Deviation of a Variable from Raw Data $\begin{array} { l l l l l l l l l l } 1.1 & 5.2 & 3.6 & 5.0 & 4.8 & 1.8 & 2.2 & 5.2 & 1.5 & 0.8 \end{array}$

question 43

Short Answer

Compute the Standard Deviation of a Variable from Raw Data
-In a random sample, 10 employees at a local plant were asked to compute the distance they travel to work to the nearest tenth of a mile. The data is listed below. Compute the range, sample standard deviation and sample variance of the data.
$\begin{array} { l l l l l l l l l l } 1.1 & 5.2 & 3.6 & 5.0 & 4.8 & 1.8 & 2.2 & 5.2 & 1.5 & 0.8 \end{array}$

Recognize the definitions and purpose of a scientific hypothesis.

Distinguish between independent t-tests and their application criteria.

Grasp the interpretation of scatter plots in determining correlation strength and direction.

Apply the concept of confidence levels in statistical analysis.

---

Definitions:

NPV Rule

The principle that an investment is considered acceptable if its net present value (NPV) is positive, under the context of discounted cash flow analysis.

Decision-Maker

An individual or group responsible for making choices that will impact themselves or others, often involving allocation of resources or resolutions in the face of challenges.

Zero NPV

A scenario in which the net present value of a project or investment is zero, indicating that the projected cash flows exactly discount the initial investment, showing neither a loss nor a gain.

Multiple IRRs

A phenomenon that occurs when there is more than one internal rate of return for a project due to changing cash flow signs over the project's lifetime.