# Question: consider the following set of data 15 12 34 45...

###### Question details

Consider the following set of data.

(15, 12), (34, 45), (62, 31), (78, 18), (106, 64), (122,
12)

(a) Calculate the covariance of the set of data. (Give your answer
correct to two decimal places.)

(b) Calculate the standard deviation of the six *x*-values
and the standard deviation of the six *y*-values. (Give your
answers correct to three decimal places.)

s_{x} |
= |

s_{y} |
= |

(c) Calculate *r*, the coefficient of linear correlation,
for the data in part (a). (Give your answer correct to two decimal
places.)