SCENARIO 10-3
as Part of an Evaluation Program, a Sporting

question 169

True/False

SCENARIO 10-3
As part of an evaluation program, a sporting goods retailer wanted to compare the downhill coasting speeds of 4 brands of bicycles.She took 3 of each brand and determined their maximum downhill speeds.The results are presented in miles per hour in the table below. $\begin{array}{lllll}\text { Trial}&\text { Barth}&\text { Tornado }&\text {Reiser}&\text { Shaw }\\1 & 43 & 37 & 41 & 43 \\2 & 46 & 38 & 45 & 45 \\3 & 43 & 39 & 42 & 46\end{array}$
-Referring to SCENARIO 10-3, the test is valid only if the population of speeds has the same variance for the 4 brands.

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Definitions:

Cross-sequential Research

A research method combining both cross-sectional and longitudinal designs to analyze variables over time across different cohorts.

Mental Abilities

The cognitive functions and capabilities of the mind, including reasoning, memory, comprehension, and problem-solving.

Cohort Differences

Variations in characteristics, experiences, or outcomes among groups of people who share a particular common demographic experience, such as year of birth.

Operant Conditioning

Operant conditioning is a learning process wherein behavior is modified by reinforcement or punishment, a principle established by B.F. Skinner in behavioral psychology.