Question: A study finds that distance visual acuity and spherical equivalent refractive error are correlated (r = -0.6, p=0.003, variance = 0.36, mean uncorrected VA in

A study finds that distance visual acuity and spherical equivalent refractive error are correlated (r = -0.6, p=0.003, variance = 0.36, mean uncorrected VA in decimal notation = 0.4, mean spherical refractive error = -0.75D). What proportion of the data fit the model that increased refractive error predicts uncorrected visual acuity?

60%

40%

36%

0.3%

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