Consider the following bivariate data.

Question

Point A B C D E F G H I J
x 3 4 2 1 7 2 1 0 4 2
y 1 7 3 3 6 6 5 0 6 2

(a) Construct a scatter diagram of the given bivariate data. (Do this on paper. Your instructor may ask you to turn in this work.)

(b) Calculate the covariance. (Give your answer correct to two decimal places.)


(c) Calculate sx and sy. (Give your answers correct to three decimal places.)
sx =
sy =

(d) Calculate r using formula 13.2. (Give your answer correct to two decimal places.)


(e) Calculate r using formula 13.3. (Give your answer correct to two decimal places.)