Conducting Educational Research
Caroll
Caroll
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TABLE OF CONTENTS<br />
8. Analyzing Data: Inferential Statistics .......................................................... 155<br />
x<br />
Chapter Overview............................................................................................ 155<br />
Introduction ..................................................................................................... 155<br />
Chance and the Normal Distribution ............................................................... 156<br />
Comparing Group Means with a T-Test .......................................................... 159<br />
Hypothesis Testing and Errors .................................................................... 161<br />
One-Tailed and Two-Tailed Tests............................................................... 162<br />
Conservative Calculations........................................................................... 164<br />
Analysis of Variance (ANOVA)...................................................................... 166<br />
Practical Significance ...................................................................................... 168<br />
Chi Square ....................................................................................................... 169<br />
Next Steps........................................................................................................ 172<br />
Chapter Self-Check.......................................................................................... 172<br />
Chapter Review Questions .............................................................................. 172<br />
References ....................................................................................................... 173<br />
9. Quantitative Study Designs........................................................................... 175<br />
Chapter Overview............................................................................................ 175<br />
Introduction ..................................................................................................... 175<br />
Quantitative Study Designs ............................................................................. 175<br />
Study Types in which there is Usually no Intervention (Descriptive and<br />
Correlations) .................................................................................................... 178<br />
Descriptive Study........................................................................................ 178<br />
Correlational Study ..................................................................................... 178<br />
Multiple Regression Analysis ..................................................................... 179<br />
Factor Analysis ........................................................................................... 179<br />
Study Types that Measure the Impact of an Intervention (Comparison of<br />
Group Means).................................................................................................. 180<br />
Single Group Pre/Posttest ........................................................................... 180<br />
Two Groups Posttest Only .......................................................................... 181