Find the:

A. r (coefficient value)

B. the type of relationship the variables have

C. Cr-ea-te a scatterplot (show the solutions)

st economic variables. To illustrate the point example, consider the number of cellular phone subscribers (x) from 1989 to 199 elation as spurio period. us, together with the total gross revenue (y) of the top 100 US law firms over the Year Cell phone subscribers (in thousands) Top U.S. law firms gross 1989 revenue (in million dollar 3 508.9 1990 12 400 5 283.1 13 500 1991 7 557.1 13 900 1992 11 032.8 14 300 1993 16 009.5 14 600 1994 24 134.4 15 300 1995 33 785.7 16 200 1996 44 000.0 18 000 1 ECCON 6.! rose won it the two variables have so functional wop = U. Un the other hand, # p = 0. it does not imply that the two variables have pendence. It only implies that the variables have no linear dependence. Figure 6.5.1 gives four different rios for the correlation between two continuous variables. Strong Positive Correlation strong Negative Correlation 30 10 20 2-10 10 -20 -30 6 8 10 10 No Dependence Quadratic Dependence and Correlation and No Correlation b 20 D N 32 0 * -20 -40 -2 -60 2 2 4 6 10 FIGURE 6.5.4