An engineer measures the peak current (in microamps) when a solution containing

Question

An engineer measures the peak current (in microamps) when a solution containing an amount of nickel (in parts per it)) is added to a buffer. The experiment was repeated for eleven different values of nickel solutions. A scatterplot showing the data is given below: Suppose a regression line was added to the plot above. If an additional measurement had been taken with the nickel of 72 parts per 10 and a peak current of 0.25 microamps, adding this observation would: decrease the intercept, decrease the slope.. increase the intercept, increase the slope. increase the intercept, decrease the slope. decrease the intercept, increase the slope, not affect the regression line.

Explanation / Answer

as the value which we are trying to add has a peak of 0.25 which is comparatively lesser then the other observation therefore the intercept of the grapg will decrease as well as the slope will increase therefore option D is correct.

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