i. The interquartile range is the average of the values of the first and third quartile. ii. An outlier is a data point that always occurs in the first quartile.
iii. A student scored in the 85 percentile on a standardized test. This means that the student scored lower than 85% of the rest of the students taking the test.
A) (i), (ii) and (iii) are all correct statements
B) (i) and, (ii) are correct statements but not (iii).
C) (i) and, (iii) are correct statements but not (ii).
D) (ii) and (iii) are correct statements, but not (i).
E) (i), (ii) and (iii) are all false statements.

Question

Quizplus · Accepted Answer

i. The interquartile range is not the average of the first and third quartiles; it is the difference between the third and first quartile. ii. An outlier does not always occur in the first quartile; it is a data point that is significantly higher or lower than the rest of the data. iii. Scoring in the 85th percentile means the student scored higher than 85% of the rest of the students, not lower.

I the Interquartile Range Is the Average of the Values