What does the length of each line of a stem-and-leaf display represent?
a. The percentage of observations in the interval represented by that stem.
b. The number of observations in the interval represented by that stem.
c. The total frequency of observations within or below that stem.
d. The number of digits to the left of the decimal point.
Question 2
The Spearman rank-correlation coefficient for 20 pairs of data when di2 = 50 is _____.
a. .0063
b. .0376
c. .9624
d. .9937
