Hello!

Please show steps and explain in layman's term. Thank you!

A researcher is interested if the number of pets people own (the x-variable) is related to their stress on a scale of 0-80 (the y-variable). Given these sample data points:

	xn	yn
n1	2	60
n2	1	50
n3	3	40
n4	4	70
n5	4	50

1. cov_xy(the covariance ofxand y)
2. s_x(the standard deviation ofx)
3. s_y(the standard deviation ofy)
4. r_xy(the correlation ofxand y)