The second quartile of a data set is 4.2. which statement about the data values is true?
a. the data value 2.5 will lie below the second quartile.
b. the data value 4.7 will lie below the second quartile.
c. one fourth of the values are less than or equal to 4.2, and three fourths are above 4.2.
d. one fourth of the values are less than or equal to 4.2, and half of the values are above 4.2.
e. one fourth of the values are above 4.2, and half of the values are less than or equal to 4.2.