a record or narrative description of past events. a history of France; he gave an inaccurate account of the plot to kill the president; the story of exposure to lead. report, news report, story, account, write up (noun).
1 Responding (or Dependent) Variable: This is the variable that changes as a result of the changes in the manipulated variable. 2  In our fertilizer example, the responding variable would be the size of the plants. 3  Controlled Variables (or Controls): These are all the things that you will keep the same in your experiment. Responding (or Dependent) Variable: This is the variable that changes as a result of the changes in the manipulated variable. 2  In our fertilizer example, the responding variable would be the size of the plants. 3  Controlled Variables (or Controls): These are all the things that you will keep the same in your experiment.
In science, the control variable is the one factor in an experiment that the researcher holds steady in an effort to isolate the effect that is being studied. According to About.com, it is also sometimes referred to as the constant variable.