Consider the following data set and fill in the blanks in the statements below
1.5 2.9 4.9 6.5 6.9 7.0 7.0 7.6 7.7 8.0
8.2 8.2 8.5 8.5 8.5 8.7 8.8 9.2 9.3 9.6
a. The data value 6.5 is the _______ percentile.
b. The percentile rank of the data value 7.7 is ________.
Please show work and explain how to get.