Chat with us, powered by LiveChat Once you start to understand how exciting the world of statistics can be, it is tempting to fall into the trap of chasing statistical significance. That is, | WriteDen

Once you start to understand how exciting the world of statistics can be, it is tempting to fall into the trap of chasing statistical significance. That is,

 Once you start to understand how exciting the world of statistics can be, it is tempting to fall into the trap of chasing statistical significance. That is, you may be tempted always to look for relationships that are statistically significant and believe they are valuable solely because of their significance. Although statistical hypothesis testing does help you evaluate claims, it is important to understand the limitations of statistical significance and to interpret the results within the context of the research and its pragmatic, “real world” application.  

Discussion: WEEK 5 Statistical Significance and Meaningfulness

Once you start to understand how exciting the world of statistics can be, it is tempting to fall into the trap of chasing statistical significance. That is, you may be tempted always to look for relationships that are statistically significant and believe they are valuable solely because of their significance. Although statistical hypothesis testing does help you evaluate claims, it is important to understand the limitations of statistical significance and to interpret the results within the context of the research and its pragmatic, “real world” application.

As a scholar-practitioner, it is important for you to understand that just because a hypothesis test indicates a relationship exists between an intervention and an outcome, there is a difference between groups, or there is a correlation between two constructs, it does not always provide a default measure for its importance. Although relationships are significant, they can be very minute relationships, very small differences, or very weak correlations. In the end, we need to ask whether the relationships or differences observed are large enough that we should make some practical change in policy or practice.

For this Discussion, you will explore statistical significance and meaningfulness.

To prepare for this Discussion:

· Review the Learning Resources related to hypothesis testing, meaningfulness, and statistical significance.

· Review Magnusson’s web blog found in the Learning Resources to further your visualization and understanding of statistical power and significance testing.

· Review the American Statistical Association’s press release and consider the misconceptions and misuse of p-values.

· Consider the scenario:

· A research paper claims a meaningful contribution to the literature based on finding statistically significant relationships between predictor and response variables. In the footnotes, you see the following statement, “given this research was exploratory in nature, traditional levels of significance to reject the null hypotheses were relaxed to the .10 level.”

REFERENCES

Frankfort-Nachmias, C., Leon-Guerrero, A., & Davis, G. (2020). Social statistics for a diverse society (9th ed.). Thousand Oaks, CA: Sage Publications.

· Chapter 5, “The Normal Distribution” (pp. 151-177)

· Chapter 6, “Sampling and Sampling Distributions” (pp. 179-209)

· Chapter 7, “Estimation” (pp. 211-240)

Wagner, III, W. E. (2020). Using IBM® SPSS® statistics for research methods and social science statistics (7th ed.). Thousand Oaks, CA: Sage Publications.

· Chapter 3, “Selecting and Sampling Cases”

· Chapter 5, “Charts and Graphs”

· Chapter 11, “Editing Output”

https://content.waldenu.edu/content/dam/laureate/laureate-academics/wal/xx-rsch/rsch-8210/readings/USW1_RSCH_8210_Week05_Warner_chapter03.pdf

http://rpsychologist.com/index.html

http://academicguides.waldenu.edu/rsch8210

http://onlinestatbook.com/2/estimation/ci_sim.html

Skill Builders:

· Confidence Intervals

· Sampling Distributions

To access these Skill Builders, navigate back to your Blackboard Course Home page, and locate “Skill Builders” in the left navigation pane. From there, click on the relevant Skill Builder link for this week.

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