Dr.Greentree finds the r² value between days of sunlight (X)and plant growth (Y)to be +.48.Dr.Greentree can conclude A) 48% of plants will grow on sunny days. B) plants will grow 48% taller on sunny days. C) 48% of the variability in plant growth can be accounted for by the number of days of sunlight. D) plants will grow 48% less on cloudy days.

Question

Quizplus · Accepted Answer

The +0.48 correlation coefficient (r) indicates a positive linear relationship between days of sunlight and plant growth. Since r² represents the proportion of variability explained by the correlation, we can conclude that 48% of the variability in plant growth can be accounted for by the number of days of sunlight. This means that other factors, such as soil quality or temperature, also affect plant growth. Option A is incorrect because the correlation coefficient does not represent a percentage of plants that will grow. Option B is incorrect because the correlation coefficient does not indicate a percentage increase in plant height. Option D is incorrect because the correlation coefficient does not suggest a decrease in plant growth on cloudy days.

DrGreentree Finds the R2 Value Between Days of Sunlight (X)and

DrGreentree Finds the R² Value Between Days of Sunlight (X)and