**Understanding Repeated-Measures Studies**Participants enter a research study with unique characteristics that produce different scores from one person to another. For an independent-measures study, these individual differences can cause problems. How can these problems be eliminated or reduced with a repeated-measures study? Consider the following points:- **Consistent Samples**: In a repeated-measures study, both samples consist of the same individuals. This approach eliminates systematic differences between the two samples, which might otherwise bias the results.- **No Need for Normal Distribution**: Conducting a repeated-measures study eliminates the necessity for the population distribution of difference scores to be normal.- **Reduced Variance**: Individual differences do not add to the variance of the scores in a repeated-measures study, as the same participants are used across all treatment conditions.- **Minimized Extraneous Changes**: Repeated-measures studies help in eliminating extraneous changes to the individuals in the sample over time, ensuring more reliable results.

Answered: Participants enter a research study…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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In recent years there has been considerable controversy over the use of standardized testing of high school students. Supporters say that the practice is a good measure of both student progress and teacher performance. Opponents say that too much testing impedes learning and causes unnecessarily large expenses for the school districts. There are even reports that a significant number of high school students opt out of taking some of the standardized tests. In one large city where the school district reported that the average score on a national test taken by students in their junior year was 74, a large group of parents felt that this average was too low. The parents contracted a research company in an attempt to show that the average score was higher than the claimed average of 74. The research company took a random sample of 100 juniors and they collected the corresponding 100 exam scores for those students. 15. Pick the hypotheses most appropriate to deal with the problem above. a)…
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