i. An outlier is a data point that always occurs in the first quartile. ii. A student scored in the 85 percentile on a standardized test. This means that the student scored higher than 85% of the rest of the students taking the test.
iii. The interquartile range is the difference between the values of the first and third quartile, indicating the range of the middle fifty percent of the observations.
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. An outlier is not defined by its position in the first quartile; it is a data point that differs significantly from other observations. ii. Correct, scoring in the 85th percentile means scoring higher than 85% of the participants. iii. Correct, the interquartile range is indeed the difference between the third and first quartiles, representing the middle 50% of the data.

I an Outlier Is a Data Point That Always Occurs