Correct, A pictograph tracks data using symbols., We can combine two separate bar graphs into a double bar graph., Double bar graphs help us compare two groups of information, like boys and girls in a class., We can use double bar graphs to show data like temperatures in two cities or scores of two teams., A double bar graph displays two sets of data at the same time, Incorrect, In a pictograph, the key is not important for calculating the total number of items., Double bar graphs make it very difficult and slow to spot differences between groups., Double bar graphs are only used in math class., A pictograph tracks data using numbers., A pictograph tracks data using big data.

U14.4

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