One of nature's patterns connects the percent of adult birds in a colony that return from the previous year and the number of new adults that join the colony. Following are data for 13 colonies of sparrowhawks:

Percent returnxx	76	61	82	54	74	63	55	48	65	45	54	46	38
New adultsyy	5	7	8	11	11	15	15	14	16	16	21	19	18

Use your calculator or software to find the correlation between the percent of returning birds and the number of new birds: