Make a scatter plot for the given data. Label the tick marks on the x-axis and the y-axis Also, compute, r, the correlation coefficient and describe it's strength including if postive or negative. 17) X 27 5 4 8 3 r = y 3 6 4 4 5 2 description of r: Use the data to answer the questions. 18) The average number of people in a family that received welfare for various years is given below. The least-squares regression line is in the form y = ax + b where x is the year and y is the average number of people in a family who received welfare for the given year. a). Compute the least-squares regression line for predicting the average number of people in a family that received welfare family size from the year. b). Find the correlation coefficient. c). Predict the average welfare family size for 1982. Round to 1 decimal place. Year (x) Avg. Welfare Family Size (y) 1969 4.0 1973 3.6 1975 3.2 1979 3.0 1983 3.0 1988 3.0 1991 2.9

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