Question

Describe the type of correlation each scatter plot shows. Draw a trendline that models each data and find the equation of that trendline.

Answer 1

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.

Step-by-step explanation:

To describe the type of correlation each scatter plot shows and find the equation of the trendline, follow these steps:

1. Draw a scatter plot of the data.
2. Calculate the least-squares line by using regression analysis. Write the equation in the form ŷ = a + bx.
3. Draw the line of best fit on the scatter plot.
4. Find the correlation coefficient and determine if it is significant.
5. To find the average CPI for a specific year, refer to the data provided.