=+5.47 ● The paper “Crop Improvement for Tropical and Subtropical Australia: Designing Plants for Difficult Climates” (Field Crops Research [1991]: 113–139) gave the following data on x 5 crop duration (in days) for soybeans and y 5 crop yield (in tons per hectare):

x 92 92 96 100 102 y 1.7 2.3 1.9 2.0 1.5 x 102 106 106 121 143 y 1.7 1.6 1.8 1.0 0.3

a. Construct a scatterplot of the data. Do you think the least-squares line will give accurate predictions? Explain.