## What Does the Data Say?: Graphs and Averages

Students learn about measures of central tendency, and collect, organize, and interpret data using various kinds of graphs. Students collect data from surveys, measurements, and probability experiments. They then represent data with bar graphs, double bar graphs and broken line graphs and analyze it using measures of central tendency. Finally, students apply data collection and data analysis skills as they explore probability and sampling.

### NCTM Standard: Data Analysis and Probability

• Formulate questions that can be addressed with data and collect, organize, and display relevant data to answer them
• Select and use appropriate statistical methods to analyze data
• Develop and evaluate inferences and predictions that are based on data
• Understand and apply basic concepts of probability

### Primary Mathematical Goals

• Collect, analyze, and represent data
• Determine mean, median, and mode
• Create and interpret bar graphs and line graphs
• Build an understanding of probability as a ratio
• Use sampling to make informed predictions
• Use fractions to represent data