Data Handling and Presentation

Data is any collection of facts

Data is any collection of facts, numbers, measures, or observations that provide information. For example, collecting information about classmates' fa

Tally marks (|) are used

Tally marks (|) are used to count and organize data efficiently. We make one mark for each item, and when we reach 5, we draw a line through the previ

Pictographs represent data using pictures

Pictographs represent data using pictures or symbols. Each symbol represents a certain number of items (the scale). For example, one symbol might repr

Bar graphs use bars of equal

Bar graphs use bars of equal width to represent data. The height (or length) of each bar corresponds to the frequency of that category. Bars can be dr

The scale determines what each unit

The scale determines what each unit or symbol represents. For small numbers, we might use 1 unit = 1 item. For larger numbers, we might use 1 unit = 1