AP BIOLOGY

Detailed explanation-1: -A bar graph is used to show comparison between different categories. It is used to represent discontinuous, ungrouped data.

Detailed explanation-2: -We usually us a bar chart for discontinuous variation data: We usually us a line graph for continuous variation data: This means that living things will naturally show variation (they will be different to each other).

Detailed explanation-3: -There is no range of data. What chart do you use to plot discontinuous variation? You use a bar chart with gaps between the bars. This is because there is no range of data.

Detailed explanation-4: -Bar charts usually present categorical variables, discrete variables or continuous variables grouped in class intervals. They consist of an axis and a series of labelled horizontal or vertical bars. The bars depict frequencies of different values of a variable or simply the different values themselves.

Detailed explanation-5: -Histograms are a standard way to graph continuous variables because they show the distribution of the values.