Vertical lines, drawn upward from the x-axis to the top of the graph, that separate the points in time of different independent variable conditions or important changes within a treatment… Read more
Condition change lines Read More
Interpreting graphed data is an important skill to have, for the BCBA® exam and beyond. A fundamental part of this is the level line. PTB founder Dana Meller breaks down both methods for establishing a level line and when to use them.
Dana Do’s: Mean or Median? Choosing the Right Level Line to Interpret Graph Data Read More
A line that connects successive data points within a specific phase of treatment or condition on a graph.
Specific symbols on a graph that represent the measurement of a behavior, recorded during a specific observation period.
Something within a person’s environment that can be a barrier to the effectiveness of behavior analysis-based services.
Environmental constraint Read More
On a line graph, the degree to which the data points on the y-axis converge, established by calculating the mean or median of the graphed data points.
A horizontal line on a line graph established by calculating the average of the graphed data points; used to signify the degree to which data points converge on the y-axis.
A horizontal line on a line graph established by calculating the median of the graphed data points, used to signify the degree to which data points converge on the y-axis.
A method of analyzing the trend of the data on a line graph that involves dividing the data into two equal parts and establishing intersections for mid-rate and mid-date points
Quarterly intersect line of progress Read More
Specific marks on, or breaks in, the x-axis (i.e., horizontal axis) indicating the time periods during which data were not collected.
A line drawn on a line graph that represents the general direction of the data; used to visually analyze the overall trend of the graphed data.
Split-middle line of progress Read More
