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Answer :
Final answer:
To describe the type of correlation in a scatter plot, calculate the least-squares line equation and find the correlation coefficient. Also, find the average CPI for a specific year.
Explanation:
To describe the type of correlation each scatter plot shows and find the equation of the trendline, follow these steps:
- Draw a scatter plot of the data.
- Calculate the least-squares line by using regression analysis. Write the equation in the form ŷ = a + bx.
- Draw the line of best fit on the scatter plot.
- Find the correlation coefficient and determine if it is significant.
- To find the average CPI for a specific year, refer to the data provided.
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