17. Scatter plotGraphic display of data communicates the nature of a distribution more quickly and vividly.
Scatterplot is arguably the most informative device for illustrating a bivariate distribution and visually assess correlation between two variables.
A scatterplot has two equal-length axes, one for each variable (“bivariate"). The horizontal axis of of figure below represents score values on the spatial reasoning test (X), and the vertical axis represents score values on the test of mathematical ability (Y). Each axis is marked off according to the variable’s scale.
Each dot, or data point, represents a student’s two scores simultaneously.
All you need to construct a scatterplot is graph paper, ruler, pencil, and a close eye on accuracy as you plot each data point. Consider the inspection of scatterplots to be a mandatory part of correlational work because of the visual information they convey.
* * *
Fundamentals of Statistical reasoning in Education, Theodore Coladarci, Casey D. Cobb, Edward W. Minium and Robert C. Clarke (Click for eBook)
If you found this useful, do remember to like Psychology Learners on Facebook and subscribe by email.
In a hurry? Download the full solved IGNOU assignments from the links below >>MPC001: Cognitive Psychology
MPC002: LifeSpan Psychology
MPC003: Personality: Theories and Assessment
MPC004: Advanced Social Psychology
MPC005: Research Methods in Psychology
MPC006: Statistics in Psychology
For 'SuperNotes' click here.
For Free eBook previews click here.
For other IGNOU MAPC material click here.
For IGNOU related information and material click here.