PSY 4930 Chapter Notes - Chapter 9: Confidence Interval, Standard Deviation, Type I And Type Ii Errors
Document Summary
Chapter 9: significantly significant, what it means for you & me. Risk of set by the researcher for rejecting a null hypothesis when it"s true. Same as significance level: a null hypothesis will either be all true or all false, you will never know for sure because the null can"t be tested directly. Some reports will use "marginally signicant" to denote a small difference in probability. Probability of accepting a null hypothesis when its false. Test is administered to sample & mean scores are calculated & compared. Conclusions are drawn as to whether difference are due to chance or are "true" & thereby statically significant differences between the groups. Final conclusion is reached regarding relationship shown by data. Experience will prove the best guide, but in the meantime the chart below can be helpful. A statement of the null hypothesis is made. Setting the level of risk associated with the null is determined.
