Test the Significance of the Correlation Coefficient $\mathrm { r }$

question 57

Multiple Choice

Test the significance of the correlation coefficient $\mathrm { r }$ at $\ddagger = .05$ for the data below
$\begin{array}{cccccc}\mathrm{X} \text { values } & -5 & -3 & 0 & 3 & 5 \\\mathrm{Y} \text { values } & 3 & 1 & -3 & -4 & -1\end{array}$

• A) Reject \(= 0\) because \(2.58 > 2.57\)
• B) Do not reject \(- = 0\) because \(- 1.91 < 2.57\)
• C) Reject \(= 0\) because \(- 1.91 > 2.78\)
• D) Do not reject \(= 0\) because \(- 1.91 > - 3.18\)

---

Definitions:

Targeting Process

The method of identifying and reaching specific groups within a market based on shared characteristics or needs.

Target Market

A target market is a specific group of consumers at whom a company aims its products and services, defined by various demographics such as age, gender, income level, and personal interests.

Business-to-business

A sales model focusing on the transaction of products or services between companies, rather than between a company and individual consumers.

Demographic

Statistical data relating to the population and particular groups within it, used to identify markets and understand consumer segments.