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Algebra-1

You will collect and represent data on a line plot.

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After completing this tutorial, you will be able to complete the following:

- Collect and represent data on a line plot.
- Identify the range, mode, outliers, and data clusters or gaps of a set data displayed on a line plot.

The Activity Object examines the real-life scenario of taking a survey. Be sure that students are familiar with the concept of a survey. Many examples of surveys can be found in magazines and newspapers. Bring in a few examples to share with the students prior to presenting the Activity Object. Students are introduced to data collection and analysis with a focus on key vocabulary such as, range, mode, outliers, gap, and cluster. After completing the Activity Object, some students may require more exposure to these terms.

Line plot: a graph that shows the frequency of data along a number line

Cluster: the interval of points grouped closely together

The cluster of the above data is 6-9.

Gap: the largest interval where no data occurs

The gap of the above data is 9-15.

Mode: the most repeated data point

The mode of the above data is 8.

Outlier: the point(s) of data relatively isolated from the rest of the data

The outlier of the above data is 15.

Range: the difference between the greatest and least values in a set of data

The range of the above data is 14 (15-1).

Approximate Time | 20 Minutes |

Pre-requisite Concepts | Students should know measures of central tendency. |

Course | Algebra-1 |

Type of Tutorial | Concept Development |

Key Vocabulary | cluster, data, gap |