"Picture graphs" refers to a visual representation or chart that uses pictures or symbols to convey information or data in an easy-to-understand way. Full definition
Create scaled picture graphs, scaled bar graphs, and frequency tables to represent a data set - including data collected through observations, surveys, and experiments - with several categories. (dreambox.com)
Create frequency tables, scaled picture graphs and bar graphs to represent a data set with several categories. (dreambox.com)
Survey the number of letters in names and create a class picture graph. (educationworld.com)