2. ANOVA By Heather Nydam-Fragapane

3. ANOVA Anova is an acronym for  Analysis of Variance

4. ANOVA  A statistical method for making simultaneous comparison between two or more means  Determines whether a significant relation exists between variables; especially if there are more than two variables  Used to accept or reject a null hypothesis

5. Simple Analysis of Variance  A.K.A One-way Analysis of Variance  Used when one factor is being studied  The factor has multiple levels  Only one grouping dimension  Tests data between two groups  Tests data within each group  Tests both sets of data for comparison

6. Factorial Design  More complex type of ANOVA  Explores more than one treatment  Compares variances  Compares variables within a group  Compares variables between groups

7. ANOVA Test  Tested using an F-Test  Tests differences between means  Tests more than two groups on one factor  The formula for the F-Test:  F= MS between / MS within

8. Solving for ANOVA using F-Test Compare the Scores of Three Groups of Third Grades and their Encoding and Decoding Scores for Reading Group 1Group 2Group 3 95498 329956 504510 876213 887743 318265 39072 91888 752022 661334

9. Solving for ANOVA in SPSS *First add the data collected to SPSS

10. Solving for ANOVA in SPSS

14. Results of ANOVA in SPSS Descriptives Scores NMean Std. DeviationStd. Error 95% Confidence Interval for Mean Minimu mMaximum Lower BoundUpper Bound 1 1061.800031.449439.9451839.302484.29763.0095.00 2 1058.000035.1378211.1115632.863983.13614.0099.00 3 1061.800031.449439.9451839.302484.29763.0095.00 Total 3060.533331.629035.7746448.722972.34383.0099.00

15. Results of ANOVA in SPSS ANOVA Scores Sum of SquaresdfMean SquareFSig. Between Groups 96.267248.133.045.956 Within Groups 28915.200271070.933 Total 29011.46729

16. Contact Information  Heather Nydam-Fragapane  www.heathernydam.com www.heathernydam.com