Which One of the Following Is the Most Accurate Statement

question 68

Multiple Choice

Which one of the following is the most accurate statement about group differences among students?

• A)When we have knowledge about typical group differences, we have a very good idea of how individual students are likely to perform in the classroom.
• B)We can make fairly accurate predictions about individual students when we know their ethnic background, but not when we know their gender.
• C)We can make fairly accurate predictions about individual students when we know their gender, but not when we know their ethnic background.
• D)The average for one group may be different than for another group, but variability within each group keeps us from predicting individual performance.

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Definitions:

Test Statistic

A value calculated from sample data during a hypothesis test. It is used to determine whether to reject the null hypothesis.

Chi-squared

A statistical test used to determine if there is a significant difference between observed frequencies and expected frequencies in categorized variables.

Critical Values

Specific points in the distribution of the test statistic beyond which the null hypothesis is rejected in hypothesis testing.

Degrees of Freedom

The number of values in a calculation that are free to vary without violating any constraints applied to the dataset, often impacting statistical significance testing.