In a statistic class, 10 scores were randomly selected with the following results were obtained:
74, 73, 77, 77, 71, 68, 65, 77, 67, 66

-What is the first quartile?
A)65.9
B)67.3
C)67.0
D)73.85
E)77.0

Question

In a statistic class, 10 scores were randomly selected with the following results were obtained:
74, 73, 77, 77, 71, 68, 65, 77, 67, 66

-What is the first quartile?
A)65.9
B)67.3
C)67.0
D)73.85
E)77.0

Quizplus · Accepted Answer

The first quartile is the median of the lower half of the dataset. To find it, we need to arrange the data in ascending order:
65.0, 65.9, 67.0, 67.3, 70.1, 73.85, 77.0, 80.2, 84.5
The lower half is:
65.0, 65.9, 67.0, 67.3
The median of this half is the first quartile, which is 67.0.

In a Statistic Class, 10 Scores Were Randomly Selected with the Following