146 / 762
146
Chapter 4: Measures of Position
CHAPTER 4
●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●
Measures of Position
●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●●
You should study the topics in this chapter if you need to review
or want to learn about
Measures of Position
How to compute these measures and investigate some of their
properties.
The z-score or Standard Score
Percentiles
Outliers
Box Plots
4 - 1 Introduction
Once you read this chapter and study these topics you will recognize that
these measures deal with only one property of the data set or distribution.
This property is the position or location of a data value relative to the other
values in the data set or distribution. The measures studied here will give
some understanding of where a data value is located in the data set.
However, you will need to combine these position or location measures with
other properties in order to fully understand the true nature of the data set.
Other properties for single variable data have been studied in previous
chapters and also will be investigated in later chapters.
Definition: Measure of Position
A measure of location or position for a collection of data values is a number
that is meant to convey the idea of the relative position of a data value with
respect to the other values in the data set.