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Scatter plot and correlation:

Construct a scatter plot, Find the value of the linear correlation coefficient r, and find the critical value of r using α=0.05. Determine whether there is sufficient evidence to support a claim of a linear correlation between the two variables.

CPI and Pizza the paired values of the consumer price index (CPI) and the cost of a slice of pizza are listed below: Is there a linear correlation between the CPI and the cost of a slice of pizza?

                          30.2   48.3     112.3   162.2   191.9   197.8

            0.15     0.35     1.00     1.25     1.75     2.00

CPI

30.2

48.3

112.3

162.2

191.9

197.8

Cost of Pizza

0.15

0.35

1.00

1.25

1.75

2.00

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M922339

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