1. Tree Heights In a study of the relationship between heights and trunk diameters of trees, botany students collected sample data. Listed below are the tree circumferences

(in feet). The data are based on results in “Tree Measurements” by Stanley Rice, American Biology Teacher, Vol. 61, No. 9. Using the circumferences listed below, find the

(a) mean;

(b) median;

(c) mode;

(d) midrange;

(e) range;

(f) standard deviation;

(g) variance; (h) (i) (j)

1.8 1.9 1.8 2.4 5.1 3.1 5.5 5.1 8.3 13.7 5.3 4.9 3.7 3.8 4.0 3.4 5.2 4.1 3.7 3.9