The accompanying data on x = current density (mA/cm2) and y = rate of deposition

Question

The accompanying data on x = current density (mA/cm2) and y = rate of deposition ( /min) appeared in an article. Do you agree with the claim by the article's author that "a linear relationship was obtained from the tin-lead rate of deposition as a function of current density"? x 20 40 60 80 y 0.09 1.15 1.76 2.32 Find the value of 2. (Round your answer to three decimal places.) 2 Explain your reasoning. O The very high value of 2 denies the author's claim O The very low value of 2 denies the author's claim O The very low value of 2 confirms the author's claim. O The very high value of 2 confirms the author's claim.

Explanation / Answer

Put the data in excel in range from A1:B4

and use the excel function

CORREL(A1:A4,B1:B4)

r = 0.987

r^2 = 0.987*0.987 = 0.974 ( rounded to three decimal places)

Reasoning:

Option D is Correct because R^2 is very high

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