A vertical line on a graph indicating a change in treatment is called a:
A) baseline
B) time line
C) phase line
D) treatment line

Question

A vertical line on a graph indicating a change in treatment is called a:​
A) ​baseline
B) ​time line
C) ​phase line
D) ​treatment line

Quizplus · Accepted Answer

A vertical line on a graph indicating a change in treatment is called a phase line. This is because it represents a change in the experimental phase or condition being tested. Baseline refers to the initial measurement before any treatment is given, time line refers to a horizontal axis showing the passage of time, and treatment line is not commonly used terminology in experimental design.

A Vertical Line on a Graph Indicating a Change in Treatment