Unit 1: Building A Math Community

• data: a collection of information gathered by observation, questioning or measurement.

  • numerical data: data that is measurable and represented by a number such as time, height, weight, amount, and so on

  • categorical data: data that is described by a word such as a person's gender, hometown, or the types of movies they like

• survey: a method of collecting a sample of data by asking people questions

• frequency table: a table used in statistics that organizes data as an ordered list of scores and how often they occur.

• scale: measuring data in a standard increasing amount

• scaled bar graph: a graph using bars to show quantities or numbers so they can be easily compared.

• line plot: a number line long enough to cover all numbers in a data set,showing a dot, cross or mark over the position of each number. If there is more than one dot, cross or mark falls in the same position,they are stacked up.

Creating your own line plot