jagomart
digital resources
picture1_Linear Regression Ppt 68554 | Correlation And Regression


 162x       Filetype PPTX       File size 0.66 MB       Source: bahan-ajar.esaunggul.ac.id


File: Linear Regression Ppt 68554 | Correlation And Regression
1 chapter outline 1 overview 2 correlation 3 regression analysis copyright 2010 pearson education inc 2 if variances are similar t tests are appropriate group a group b copyright 2010 ...

icon picture PPTX Filetype Power Point PPTX | Posted on 29 Aug 2022 | 3 years ago
Partial capture of text on file.
       1) Chapter Outline
           1) Overview
           2) Correlation
           3) Regression Analysis
    Copyright © 2010 Pearson Education, Inc.             2
    If variances are similar, t-tests are appropriate
                  Group A                   Group B
    Copyright © 2010 Pearson Education, Inc.                      3
    If variances are not similar, t-tests could be misleading
       Correlation and 
          regression                        Group B
          analysis can 
          help….
                 Group A
    Copyright © 2010 Pearson Education, Inc.                      4
     2) Correlation Coefficient
    • The correlation coefficient, r, summarizes the 
      strength of association between two metric (interval or 
      ratio scaled) variables, say X and Y.  
       • In other words, you can have a correlation 
         coefficient for Likert scale items, not dichotomous 
         items.
    • It is an index used to determine whether a linear 
      (straight-line) relationship exists between X and Y.  
    • As it was originally proposed by Karl Pearson, it is known as the Pearson 
      correlation coefficient.
    Copyright © 2010 Pearson Education, Inc.                   5
   Linear relationships
     For example:
     How much does 
        weight (Y) go 
        up as height 
        (X) goes up by 
        one unit?
     Height and 
        weight are 
        positively 
        correlated.
    Copyright © 2010 Pearson Education, Inc.             6
The words contained in this file might help you see if this file matches what you are looking for:

...Chapter outline overview correlation regression analysis copyright pearson education inc if variances are similar t tests appropriate group a b not could be misleading and can help coefficient the r summarizes strength of association between two metric interval or ratio scaled variables say x y in other words you have for likert scale items dichotomous it is an index used to determine whether linear straight line relationship exists as was originally proposed by karl known relationships example how much does weight go up height goes one unit positively correlated...

no reviews yet
Please Login to review.