Skip to main content Accessibility help
×
Hostname: page-component-78c5997874-lj6df Total loading time: 0 Render date: 2024-11-08T07:20:40.407Z Has data issue: false hasContentIssue false

22 - Descriptive and Inferential Statistics

from Part IV - Statistical Approaches

Published online by Cambridge University Press:  25 May 2023

Austin Lee Nichols
Affiliation:
Central European University, Vienna
John Edlund
Affiliation:
Rochester Institute of Technology, New York
Get access

Summary

What are statistics and why do we need them? This chapter introduces descriptive statistics and then creates a bridge from describing data concisely to answering questions using hypothesis testing and inferential statistics. The chapter leads the reader to an understanding of how descriptive statistics summarize and communicate meaning, based on data, and how they underpin inferential statistics. Research study examples, figures, and tables throughout the chapter explain the topics addressed by applying the ideas discussed. The chapter begins with the basics of descriptive statistics – normal distributions, options for displaying frequencies, measures of central tendency and variability, and correlations. The transition to inferential statistics covers standardization and the z-score, sampling, confidence intervals, and basics of hypothesis testing including Type I and II errors. We then introduce inferential statistics using three methods – t-tests, one-way analysis of variance (ANOVA), and chi-square tests.

Type
Chapter
Information
Publisher: Cambridge University Press
Print publication year: 2023

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Cohen, J. (1992). A power primer. Psychological Bulletin, 112, 155159. http://dx.doi.org/10.1037/0033-2909.112.1.155CrossRefGoogle ScholarPubMed
Garner, D. M., Olmstead, M. P., & Polivy, J. (1983). Development and validation of a multidimensional eating disorder inventory for anorexia nervosa and bulimia. International Journal of Eating Disorders, 2, 1534.Google Scholar
Montoya, A. & Cannon, B. (2019). Practicing quantitative psychology (from an aerial circus trapeze!?) with Amanda Montoya, PhD. Eye on Psi Chi, 23(3), 2225. https://doi.org/10.24839/2164-9812.Eye23.3.22CrossRefGoogle Scholar
Smith, N. N. & Ransford, C. (1999). The relationship between eating disorders and conformity in female college students. Psi Chi Journal of Undergraduate Research, 4, 911. Available at: www.psichi.org/resource/resmgr/journal_1999/Spring99_Smith.pdfGoogle Scholar
Smith, R. A. & Davis, S. F. (2010). Using statistics to answer questions. In The Psychologist as Detective: An Introduction to Conducting Research in Psychology, 5th ed. (pp. 171202). Prentice Hall.Google Scholar
Wright, R. R., Broadbent, C., Graves, A., & Gibson, J. (2016). Health behavior change promotion among Latter-Day Saint college students. Psi Chi Journal of Psychological Research, 21, 200215. https://doi.org/10.24839/2164-8204.JN21.3.200Google Scholar

Save book to Kindle

To save this book to your Kindle, first ensure [email protected] is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.

Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

Available formats
×

Save book to Dropbox

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.

Available formats
×

Save book to Google Drive

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.

Available formats
×