The following quote is from a paper on the weight of the bottle as a possible extrinsic cue with which to estimate the price (and quality) of the wine.
The weight of the wine bottles was positively correlated
(r = 0.19)
with the price of the wines.
(a) Does the value of the correlation coefficient indicate that the relationship is weak, moderate, or strong? weak moderate strong
(b) What is the value ofr2?
Write a sentence that gives an interpretation of this value. (Round the first part to 4 decimal places, and the second part to 2 decimal places).
The value of r2 = .
Approximately % of the variation in price of the wine can be explained by the linear relationship between price and weight of the wine bottles.