To Examine the Value of Looking at Old Tests, Professor

question 77

Multiple Choice

To examine the value of looking at old tests, Professor King hands out copies of old tests to the first 20 students who come to class one day. Later she finds that these students got better grades than the other students in the class. What is wrong with this experiment?

• A) It was triple blind.
• B) There is a lack of random assignment to groups.
• C) There is a lack of demand characteristics.
• D) The Clever Hans effect occurs.

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Definitions:

P-value

A statistical measure that helps researchers determine the significance of their results, indicating the probability of observing the data or something more extreme if the null hypothesis is true.

SSE

Sum of Squares due to Error, a measure in statistics that quantifies the variance in an observed variable that is not explained by the predictive model.

Race Car Drivers

Individuals who operate cars specifically designed for competitive racing at high speeds.

Different Tracks

Courses or paths that are distinct from one another, often used in the context of education or music.