1 / 12

Basic Data Analysis

Basic Data Analysis. Chapter 14. Overview. Descriptive Analysis. Tabulation. Tabulation Frequency table Percentages Central tendency. Cross-Tabulation. Contingency Table Marginals Percentage Cross-Tabulation Base Elaboration and Refinement Elaboration analysis Moderator variable

zody
Télécharger la présentation

Basic Data Analysis

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Basic Data Analysis Chapter 14

  2. Overview • Descriptive Analysis

  3. Tabulation • Tabulation • Frequency table • Percentages • Central tendency

  4. Cross-Tabulation • Contingency Table • Marginals • Percentage Cross-Tabulation • Base • Elaboration and Refinement • Elaboration analysis • Moderator variable • Spurious relationship

  5. Data Transformation • Calculating Rank Order

  6. Displaying & Analyzing Data • Tabular & Graphic Methods of Data Display • Table • Charts and graphs • Pie chart • Line graph • Bar charts • Analysis Software

  7. Hypothesis Testing • Hypothesis • Null hypothesis • Alternative hypothesis

  8. Hypothesis Testing • Hypothesis-Testing Procedure • Develop hypothesis • Take sample and calculate sample statistics • Check for difference between obtained and expected value • Significance level • p>α • p< α • Critical values

  9. Example Problems • Page 362

  10. Chi-square Test • Formulate null hypothesis and determine expected frequency of each answer • Determine the significance level • Calculate Χ2 value • Compare calculated X2 with critical X2

  11. Chi-Square Testing • X=Σ(Oi-Ei)2/Ei • Degrees of Freedom • Page 365

  12. Choosing the Appropriate Technique • Number of Variables • Univariate v. Bivariate • Scale of Measurement • Type of Questions

More Related