Question

the following graph is an ogive of a standardized tests scores. the vertical axis is the cumulative relative frequency and can also be interpreted as a percentile. complete parts a through c.
(a) find and interpret the percentile rank of a test score with a value of 130.
a test score of 130 corresponds to the □ th percentile rank since this percentage of test scores are
□ a test score with a value of 130.

Explanation:

Step1: Locate test score 130 on axis

Find 130 on the horizontal (Test Score) axis.

Step2: Find corresponding percentile

Move vertically up to the ogive curve, then horizontally left to the vertical (Percentile) axis. The value is 40.

Step3: Interpret the percentile

The percentile rank means this percentage of scores are less than or equal to 130.

Answer:

A test score of 130 corresponds to the 40th percentile rank since this percentage of test scores are less than or equal to a test score with a value of 130.