Presentation on theme: "REPORT STRUCTURE BIVARIATE DATA. PPDAC (FOR ACHIEVED) 1. Problem: Write a question that clearly investigates the relationship between two variables. 2."— Presentation transcript:
PPDAC (FOR ACHIEVED) 1. Problem: Write a question that clearly investigates the relationship between two variables. 2. Plan: I will use iNZight to produce a scatter plot and equation. I will observe the graph to decide if the equation is valid. 3. Data: Describe the data including the correct units and show some understanding of the context. 4. Analyse: Use iNZight to draw a scatter graph and produce the trend curve.
PPDAC 5. Analyse: Describe what you see in the scatter graph (use T.A.R.S.O.G. for this). 6. Analyse: Describe the relationship between the two variables in terms of "as xxx increases, yyy...“ 7. Conclusion: Make a prediction (interpolation) using the iNZight equation, is it valid? Reliable? 8. Conclusion: Answer your problem question, is there a relationship?
ANALYZING THE SCATTER PLOT T is for trend, is it linear or not? A is for association, is it positive or negative? R is for relationship, is it strong or weak? S is for scatter, is it constant or not? Fan? O is for outliers, can you spot any? G is for groups, are there any?