Unit 4 Flashcards
A systematic form of data examination
characterized by visual inspection of
graphical displays of those data.
Visual data analysis
- Taking an overview of an entire data display, noting its general characteristics.
- Specific data inspection and analysis
The Process of Visual Analysis
To answer 2 basic questions:
- Was there a meaningful change in behavior?
- To what extent can the change be attributable to a specific environmental change?
The Purpose of Visual Analysis
Embedded in text
Presented in summary form (usually numerically in a data table)
Graph
Types of data display
A relatively simple visual format for displaying data that provide visual representations of relationships between a series of measurements and relevant
variables
Graph
Equal interval line graph Cumulative records Bar graph (Histogram) Semi logarithmic graphs (standard celeration chart)
Graphic displays used in ABA
The most commonly used graph in ABA.
Based on a Cartesian plane, a two dimensional area formed by the intersection of two perpendicular lines (one vertical, one horizontal).
Equal interval line graph
Simple line graph
Any point within the plane of the chart represents a specific relationship between the two variables (dimensions) measured along each of the axis lines.
Describe Equal interval line graphs
Charting ABA data
To evaluate treatment effectiveness
Used in functional analyses
Common Uses of Line Graphs
Horizontal X-axis Vertical Y-axis Data points The data path Condition and phase change lines Condition and phase change labels Figure legend
Parts of an Equal Interval Line Graph
X-axis.
The abscissa
Represents the passage of time
Horizontal Axis
Y-axis
The ordinate
Represents the range of values of the dependent variable
Vertical Axis
Can be marked according to the
needs of the behavior analyst as any
specified recorded observation
periods, over a period of time
X-Axis Units
Equal movements up the Y-axis represent
equal increases in the behavior; should be
expressed in whole time units
Y-Axis Units
Runs from zero up to some number which is
chosen by the creator of the graph
Y-Axis Range
An individually measured value of the target
behavior (the DV) at a given point in time
Data Point