Data on the Amount of Time Spent Studying and the Exam

question 67

Multiple Choice

Data on the amount of time spent studying and the exam score of 150 students at a high school were collected.You want to know if a student's exam score is linearly related to the amount of time spent on studying.Which of the following would you compute?

• A)Arithmetic mean.
• B)Median.
• C)Coefficient of variation.
• D)Coefficient of correlation

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Definitions:

Chi-Square Distribution

A statistical distribution used to analyze the statistical significance of the differences between categorical distributions.

Degrees Of Freedom

The number of independent values or quantities that can vary in an analysis without breaking any constraints.

Equality Of Variances

The assumption that different groups or samples have similar variances, often a prerequisite for certain statistical tests.

Test Statistic

A numerical value calculated from a statistical test, used to determine whether to reject the null hypothesis.