ton 26 yet vered The following data are measurements of tensile strength in MPa (megapascals) and hardness (Rockwell Escale, dimensionless) for 20 pieces of die-cast aluminium. A least-squares regression line has been fitted and displayed on a scatterplot of the data. rked out of 0 Flag question Sample 11 Strength 205 Hardness 160 12 201 51 13 95 14 Sample Strength Hardness 202 53 12 241 70 234 78 14 234 55 5 1234 64 244 171 222 82 18 230 67 9 170 56 10 86 Click here to download the MATLAB data file 262 238 177 88 15 51 54 16 17 18 19 20 183 170 197 223 194 52 164 83 56 240 20 200 TY IZZ3 183 19 1170 56 10 240 86 Click here to download the MATLAB data file 20 194 156 270 200 250 240 3230 strength (MPa 210 2001 180 70 hardness strength hardness mean 215.05 66.80 standard deviation 27.19225 14.08097 Intercept Slope Coefficient Standard Error 116.1019 19.9156 1.4813 0.29204 Analysis of Variance Table 170 50 55 70 75 hardness strength hardness mean 215.05 66.80 standard deviation 27.19225 14.08097 Intercept Slope Coefficient 116.1019 1.4813 Standard Error 19.9156 0.29204 MS F Analysis of Variance Table Source df SS Regression 8265.7 Residual 5783.2 Total P 7.944e-05 What proportion of variation in the strength can be explained by hardness? Select one: O a. 0.87581 O b. 0.41165 O c.0.58835 O d. 0.76704 e. 0.69966 ton 26 yet vered The following data are measurements of tensile strength in MPa (megapascals) and hardness (Rockwell Escale, dimensionless) for 20 pieces of die-cast aluminium. A least-squares regression line has been fitted and displayed on a scatterplot of the data. rked out of 0 Flag question Sample 11 Strength 205 Hardness 160 12 201 51 13 95 14 Sample Strength Hardness 202 53 12 241 70 234 78 14 234 55 5 1234 64 244 171 222 82 18 230 67 9 170 56 10 86 Click here to download the MATLAB data file 262 238 177 88 15 51 54 16 17 18 19 20 183 170 197 223 194 52 164 83 56 240 20 200 TY IZZ3 183 19 1170 56 10 240 86 Click here to download the MATLAB data file 20 194 156 270 200 250 240 3230 strength (MPa 210 2001 180 70 hardness strength hardness mean 215.05 66.80 standard deviation 27.19225 14.08097 Intercept Slope Coefficient Standard Error 116.1019 19.9156 1.4813 0.29204 Analysis of Variance Table 170 50 55 70 75 hardness strength hardness mean 215.05 66.80 standard deviation 27.19225 14.08097 Intercept Slope Coefficient 116.1019 1.4813 Standard Error 19.9156 0.29204 MS F Analysis of Variance Table Source df SS Regression 8265.7 Residual 5783.2 Total P 7.944e-05 What proportion of variation in the strength can be explained by hardness? Select one: O a. 0.87581 O b. 0.41165 O c.0.58835 O d. 0.76704 e. 0.69966
