Data Handling and Presentation — Chapter Summary

Data means any collection of facts

Data means any collection of facts, numbers, measures, observations, or other descriptions of things that convey information about those things.

Data can be collected by asking

Data can be collected by asking questions, observing things, or measuring values. It is then arranged in a list or table so that patterns can be seen

Frequency is the count of how

Frequency is the count of how many times a value, measure, or observation occurs.

Tally marks are used to count

Tally marks are used to count data in groups. A line is made for each count, and when the count reaches 5, the previous four marks are crossed by a fi

A pictograph represents data through pictures

A pictograph represents data through pictures of objects. A scale or key is used so that one symbol can stand for one or many units.