1_24 - (Example in Hannaway) High . More autonomy Low ....

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Scatter Plot • It illustrates the relationship between two variables – Strength (weak vs. strong) – Direction (positive vs. negative) (example) Correlation • Numerical indicator of the “linear” relationship •D i rec t ion • “+” values indicate “positive” relationship. •“ ” values indicate “negative” relationship. • Strength (magnitude of the value) (example of interpretations)
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(examples) Correlation Matrix (standard presentation) Var1 Var2 Var3 Var4 Var1 1 0.5 0.4 0.6 Var2 0.2 0.3 Var3 1 0.4 Var4 1 (alternative presentation) Var2 Var3 Var4 Var1 0.5 0.4 0.6 Var2 0.2 0.3 Var3 0.4
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Unformatted text preview: (Example in Hannaway) High . More autonomy Low . Less autonomy 0 . Non-urban 1 . Urban Correlation does not tell any causal relationship. (Example) Research question: Does parent involvement increases their childs achievement? Evidence: There exists strong positive correlation between parent involvement at school and students achievement. Possible explanations: Parent involvement causes increases in achievement. Higher achievement increases parent involvement. Some other third variable influences both parent involvement and student achievement (e.g., parents attitude toward the importance of education)....
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1_24 - (Example in Hannaway) High . More autonomy Low ....

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