The Data Below Are the Final Exam Scores of 10

question 54

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. What is the best predicted value for y given x = 3? Assume that the variables x and y
Have a significant correlation. $$\begin{array} { l | c | c | c | c | c | c | c | c | c | c | } \text { Hours, } \mathrm { x } & 3 & 5 & 2 & 8 & 2 & 4 & 4 & 5 & 6 & 3 \\\hline \text { Scores, y } & 65 & 80 & 60 & 88 & 66 & 78 & 85 & 90 & 90 & 71\end{array}$$

• A)71
• B)70
• C)69
• D)72

---

Definitions:

Norm Group

A representative sample used as a benchmark for interpreting the scores of an individual on psychological tests or assessments.

Measures Of Variability

Indicators of how much scores vary in a distribution. Three types of measures of variability are the range, quartile range, and the standard deviation.

Range Of Scores

Refers to the span from the lowest to the highest scores achieved on a test, indicating the breadth of varying performances.

Normally Distributed Curve

A mathematical depiction illustrating a bell-shaped distribution where the data exhibits a symmetrical spread around the mean value.