It is useful to summarize data as it is collected. True b. False 3. Independent variables are plotted along the abscissa. Dependent variables, the behavioral measures, are plotted along the ordinate. Graphs should also be labelled.
Trends emerge from data when they are summarized in a graph.
Many variables are normally distributed. This indicates that most scores are in the middle ranges and that there are few extreme scores. In other words, the intellectually gifted and the mentally disadvantaged are in a minority. These values represent the average scores for age 6 and age 9 children in the population. In this case, bimodal distribution represents two populations which, if graphed separately, would produce two normal curves.