Abstract
This chapter introduces the linear correlation coefficient, a widely used descriptive statistic that enables the researcher to describe the relationship between two interval-level measures. This situation is encountered often in criminal justice research. For example, researchers may want to establish whether number of prior arrests is related to age, education, or monthly income. similarly, it is common in criminal justice research to ask whether the severity of a sanction measured on an interval scale (e.g., number of years sentenced to imprisonment or amount of a fine) is related to such variables as the amount stolen in an offense or the number of prior arrests or convictions of a defendant. We also examine an alternative rank-order measure of association that may be used when the linear correlation coefficient will lead to misleading results.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Similar content being viewed by others
Notes
- 1.
See Jacob Cohen, Statistical Power Analysis for the Behavioral Sciences (Hillsdale, NJ: Lawrence Erlbaum, 1988), pp. 79–80. In Chapter 21, we discuss in greater detail how statisticians develop standardized estimates of “effect size.”
- 2.
For a discussion of this issue, see. J. Fox, Linear Statistical Models and Related Methods (New York: Wiley, 1994).
- 3.
It is good practice to examine the sample scatterplot of scores to assess whether this assumption is likely to be violated. We find no reason to suspect a violation of the assumption when we examine this scatterplot (see Chapter 15, Figure 15.2).
- 4.
The table does not list a t-value for df = 56. We therefore interpolate from the values of df = 55 (2.004) and df = 60 (2.000).
Author information
Authors and Affiliations
Rights and permissions
Copyright information
© 2014 Springer Science+Business Media New York
About this chapter
Cite this chapter
Weisburd, D., Britt, C. (2014). Measuring Association for Interval-Level Data: Pearson’s Correlation Coefficient. In: Statistics in Criminal Justice. Springer, Boston, MA. https://doi.org/10.1007/978-1-4614-9170-5_14
Download citation
DOI: https://doi.org/10.1007/978-1-4614-9170-5_14
Published:
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4614-9169-9
Online ISBN: 978-1-4614-9170-5
eBook Packages: Humanities, Social Sciences and LawSocial Sciences (R0)