ECON 203 1st Edition Lecture 15Outline of Last LectureI. Test Vocabulary1. Descriptive Statistics2. Inferential Statistics3. Critical ValueII. Error Chart1. Type I and Type II ErrorsIII. Chi-SquaredOutline of Current LectureI. ANOVA1. Two or More Populations2. Grand Mean3. SSEA. What Does it Ask?4. Practice ProblemA. Page 785. TailsCurrent LectureI. ANOVA1. Two or More Populations- Comparing means- Measured by analyzing data variances- Short for Analysis of Variances2. Grand Mean- This is the mean of all observations of all populations in the problem- Written as x double bar3. SSEA. What does it ask?- Measure of variability- How far apart is the data?- How wide is the distributionThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.- It helps measure the “fatness” of the distribution4. Practice Problem A. Page 78SS Df MS FTreat 118 k-1=3 SST/k-1 = 39.53.1Error 456 n-k = 36 SSE/n-k = 12.65. Tails- Always a One Tailed
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