Lesson 3: Slope Change

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In this lesson you will learn how to estimate the slope of a data path and how to compare slopes between phases to determine if an intervention had an effect.

Lesson Content

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3.1 Definition of Slope

3.2 Example of Increasing Slope

3.3 Example of Decreasing Slope

3.4 Example of Flat Slope

3.5 Example of Increasing Slope with Greater Variability

3.6 Example of Decreasing Slope with Greater Variability

3.7 Practice Describing Slope of Data #1

3.8 Example of Flat Slope

3.9 Example of Slightly Increasing Slope

3.10 Example of Slightly Decreasing Slope

3.11 Practice Describing Slope of Data #2

3.12 Estimating Slope with Variable Data

3.13 First Step in Estimating Slope with Variable Data

3.14 Second Step in Estimating Slope with Variable Data

3.15 Third Step in Estimating Slope with Variable Data

3.16 Estimating Slope with Variable Data Example #1: Connect First and Last Data Points

3.17 Estimating Slope with Variable Data Example #1: Connect High and Low Data Points

3.18 Estimating Slope with Variable Data Example #1: Adjust Angle of Original Slope Line

3.19 Estimating Slope with Variable Data Example #2

3.20 Estimating Slope with Variable Data Example #2: Connect First and Last Data Points

3.21 Estimating Slope with Variable Data Example #2: Connect High and Low Data Points

3.22 Estimating Slope with Variable Data Example #2: Adjust Angle of Original Slope Line

3.23 Estimating Slope with Variable Data Example #2: Be Wary of Single Data Points

3.24 Estimating Slope with Variable Data Example #2: Do Not Let Single Data Points Overly Influence Estimate of Slope

3.25 Estimating Slope with Variable Data Example #3

3.26 Estimating Slope with Variable Data Example #3: Connect First and Last Data Points

3.27 Estimating Slope with Variable Data Example #3: Connect High and Low Data Points

3.28 Estimating Slope with Variable Data Example #3: Adjust Angle of Original Slope Line

3.29 Estimating Slope with Variable Data Example #3: Adjust Angle of Original Slope Line Again

3.30 Estimating Slope with Variable Data Example #4: Connect First and Last Data Points

3.31 Estimating Slope with Variable Data Example #4: Connect High and Low Data Points

3.32 Practice Estimating Slope of Data

3.33 Comparing the Slopes of Two Phases

3.34 Predicting Slope Based on Baseline

3.35 Comparing Observed Slope to Predicted Slope

3.36 Describe the Baseline Slope

3.37 Intervention to Decrease Slope

3.38 Compare Observed Slope to Baseline Slope

3.39 Compare Treatment Slope to Baseline Slope

3.40 Determine if Treatment Caused Change in Slope

3.41 Practice Detecting a Change in Slope

3.42 Detecting a Change in Slope with Greater Variability

3.43 Detecting a Change in Slope with Greater Variability

3.44 Practice Detecting a Change in Slope with Greater Variability

3.45 Review

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