Bivariate data often arises from the use of two different techniques to measure the same quantity. As an example, the accompanying observations on x hydrogen concentration (ppm) using a gas chromatography method and y concentration using a new sensor method were read from a graph in an article. 46 63 66 70 70 78 95 100 114 118 124 127 140 140 140 150 152 164 198 221 37 62 53 67 84 79 93 106 117 116 127 114 134 139 142 170 149 154 200 215 Construct a scatterplot. 200 200 150 BLEK 100 50 150 200 150 100 LAUSE SALT 50 50 100 150 200 200 150 100 50 50 100 50 100 150 200 200 150 100 50 100 Does there appear to be a very strong relationship between the two types of concentration measurements? Do the two methods appear to be measuring roughly the same quantity? Explain your reasoning. O The points fall very close to a quadratic line with x-intercepts of approximately 0 and 225. This suggests that the two methods are producing substantially the same concentration measurements. 150 200 O The points fall very close to a straight line with an y-intercept of approximately 225 and a slope of about -1. This suggests that the two methods are producing substantially the same concentration measurements. O The points fall very close to a straight line with an x-intercept of approximately 0 and a slope of about 1. This suggests that the two methods are producing substantially the same concentration measurements. O The points fall very close to a straight line with an y-intercept of approximately 125 and a slope of about 0. This suggests that the two methods are producing substantially the same concentration measurements. O The points fall very close to a quadratic line with x-intercepts of approximately 0 and 225. This suggests that the two methods are producing substantially different concentration measurements. X