MATH 6350

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MATH 6350

• Ginger Holmes Rowell, Ph. D.

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Frog Data

• What conclusions did you make about frog
  jumping?

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Survey/IRB Update
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Review Terms

• Subjects
• Response Variable
• Explanatory Variable
• Treatment Variable
• Lurking Variable
• Confounding Variables
• Statistically Significant

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Review Concepts

• Randomized Comparative Experiment
• Completely Randomized Design
• Matched Pairs Design
• Block Design (Randomized Block Design)
• What is the formula for Errors in Measurement ?

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Chapter 8 Measuring

• Two types of Validity
• Measurement Validity
• Predictive Validity

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Part 2 Organizing Data

• Material Already Covered
• Ch. 10 - Graphs Good Bad
• Ch. 11- Graphs Displaying Distributions
• Ch. 12 Numbers Describing Distributions
• Ch. 13 Normal Distributions

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Strategy for Exploring Data (1 Quantitative
Variable)

• Always plot your data.
• Look for the overall pattern for striking
  deviations such as outliers.
• Briefly describe Center Spread.
• If pattern of large data set is very regular,
  describe it by a smooth curve.

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Normal Distributions
Chapter 13

• Review
• Mean vs. Median
• Standard Deviation
• Empirical Rule
• Standardized Scores (Z-score)
• Relationship between standard scores and
  percentiles
• Read this chapter
• Page 255, IQ Test Scores 4, 5,6, also 11, 12
  15, 22, 23, 27

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Relationships
Chapter 14

• Scatterplots Correlation
• Separate PowerPoint for this lesson
• Homework
• Read chapter
• Page 274, 3, 5, 19, 20 (see next page), 21,
• Try out some of the Internet Applets for
  correlation regression

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Regression
Chapter 15

• Separate PowerPoint for this lesson
• Homework
• Read chapter
• Page 298, 2, 3, 4, 5, 10, 12, 18, 25, 29
• Try out some of the Internet Applets for
  correlation regression