Final answer:
It is true that segmented bar charts are measured in relative frequency out of 100, showcasing the percentage that each subgroup contributes to the total.
Step-by-step explanation:
The statement that segmented bar charts are measured in relative frequency out of 100 is True. Segmented bar charts, also known as stacked bar charts, represent different subsets of data in a single bar, with each section of the bar showing the relative frequency of each subset as a portion of the total. By design, the total length of each bar represents the whole (100%) and each segment within a bar shows the percentage that particular subgroup contributes to the total. For example, when dealing with population data divided by age groups, a segmented bar chart could show the total population as the full length of the bar and each age group as a separate segment within the bar, indicating the proportion of the total population they represent.