Consider the following data set: 12.2,12.3,12.3,12.5,12.6,12.7,12.8,12.8,12.8,12.9,13.1,13.2,and 13.5.The rank assigned to the three observations of value 12.8 is:
A)6
B)7
C)8
D)9

Question

Quizplus · Accepted Answer

The rank of an observation is its position in the ordered data set. When the values are sorted from lowest to highest, we can see that 12.8 is the 8th observation. Even though there are three observations with the same value, each one still has a unique rank based on its position in the ordered set. Therefore, the answer is C.

Consider the Following Data Set: 12