3. In several cases of statistical analysis, researchers must manipulate the dat

Question

3. In several cases of statistical analysis, researchers must manipulate the data to guarantee anonymity of sensitive information. Suppose the following study has sensitive information. Determine your DGC (digit generated code) as the last two non-zero digits of your K# and write it down here Your K Your DGC = A police authority conducts an eight week experiment. In each week police cameras records the number of foot patrols, x, made in a small town and the number of reported crimes, y, in that town. The data are summarized as follows. x=52 + DGC ' = 225 + 2(DGC) y2=7007 n=8 Calculate your unique equation of the least squares regression line in the form of + hx. = b. Calculate the value of the correlation coefficient of this data. c. Describe the result and its significance of the correlation coefficient in terms of the situation.

Explanation / Answer

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5) a)

We can see from graph, as 'x' increases, 'y' also increases.

So, line is option iv) y = 1.22 + 0.95 * x

b) Correlation is positive and also close to 1 but not perfevt 1

So, answer is 0.88

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