The Data Below Are the Final Exam Scores of 10

question 5

Multiple Choice

The data below are the final exam scores of 10 randomly selected statistics students and the number of hours they studied for the exam. Calculate the correlation coefficient r. $$\begin{array} { l | c | c | c | c | c | c | c | c | c | c | } \text { Hours, } \mathrm { x } & 2 & 4 & 1 & 7 & 1 & 3 & 3 & 4 & 5 & 2 \\\hline \text { Scores, } y & 68 & 83 & 63 & 91 & 69 & 81 & 88 & 93 & 93 & 74\end{array}$$

• A)0.847
• B)0.991
• C)0.761
• D)0.654

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Definitions:

Negative Charge

An electrical charge that results from an excess of electrons in an atom or molecule, leading to an attraction to positively charged particles.

Action Potential

A transient electrical charge that travels along a neuron's axon, enabling neural communication.

Glial Cells

Non-neuronal cells in the central nervous system that support, nourish, and protect neurons.

Signaling System

A signaling system involves the transmission of signals or messages between cells or organisms to coordinate functions, responses, or behaviors.