the nuts and bolts of statistical research

# the nuts and bolts of statistical research - The Nuts and...

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The Nuts and Bolts of Using Statistics REVIEW CHAPTER 7! Null hypothesis o Predicts no difference between means of conditions or no relationship between variables Critical region o Alpha level o 0.05 and 0.01 are commonly used alpha levels o If the p value is less than the alpha level, you can reject your null hypothesis. o The p value of 0.03 means that there is a 3% chance of getting the data if your null hypothesis is true. This percentage is extremely low so we can reject the null hypothesis. o The p value is computed by the statistics and tells the exact probability that the mean came from when the null hypothesis is true. USING INFERENTIAL STATISTICS Comparing means Testing relationships COMPARING MEANS When comparing means, you have four options… o One-sample t -test o Independent samples t -test o Paired/related samples t -test o ANOVA COMPARING GROUPS OR CONDITIONS Effect o Is there an effect of my independent variable? o

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the nuts and bolts of statistical research - The Nuts and...

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