Final answer:
The statement that double line graphs and double bar graphs can be used to compare and contrast two or more subjects and identify trends is true. Line graphs track changes and trends over time, while bar graphs compare quantities of different groups.
Step-by-step explanation:
True or False: Double line graphs and double bar graphs may be used to compare and contrast two or more subjects and to look for trends. The answer to this question is true. Double line graphs and double bar graphs are tools in data visualization for comparing and contrasting quantitative information.
Double line graphs are useful for displaying changes over time and can easily show trends for more than one series of data. For example, you could use a double line graph to compare the monthly temperature changes over a year in two different cities.
Meanwhile, double bar graphs are effective when you need to compare quantities between different groups or subjects. They can show the relationship between different data points clearly, such as comparing the population sizes of different countries, and provide a visual representation of different groups within those populations, which can also include breakdowns by categories such as age, gender, or income level. An example of a double bar graph is one that compares the annual sales figures of two products over multiple years.