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⟩ The value of a correlation is reported by a researcher to be r = -0.5. Which of the following statements is correct?

* a) The x-variable explains 25% of the variability in the y-variable.

* b) The x-variable explains 25% of the variability in the y-variable.

* c) The x-variable explains 50% of the variability in the y-variable.

* d) The x-variable explains 50% of the variability in the y-variable.

Answer - a

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