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Fig 1.

Traditional Venn diagram depicting two correlated variables (r1y = .50 or −.50).

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Fig 2.

Traditional Venn diagram for two independent variables and one dependent variable: r12 = .70 or −.70, r2y = 0, and r1y = .40 or −.40.

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Fig 2 Expand

Fig 3.

Modified Venn diagram for two independent variables and one dependent variable: r12 = ±.70, r2y = 0, and r1y = ±.40.

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Fig 3 Expand

Fig 4.

Modified Venn diagram for k independent variables and one dependent variable: Based on data in Table 1.

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Fig 4 Expand

Table 1.

Correlation matrix for five independent variables and one dependent variable.

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Table 1 Expand

Table 2.

Analysis of variance of regression.

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Table 2 Expand