Tell students they will use this technique to gather data that represents the distribution of body heights in their school. Procedure Working in small teams, students will measure the height of every tenth student entering the building on a given morning. Each team will be assigned a specific entrance to monitor. After data collection has been completed, students may create simple bar graphs showing data distribution. Mean, median, mode should all be reviewed.
Students compute average.
Ask students to estimate the length of a krill in millimeters. Review and discuss headings for each column of data. Explain that krill with body lengths from 8.5mm to 20mm were born the previous austral summer. Direct students to examine the data to find the greatest incidence of these small body lengths. Ask students how this data might be organized so that it's more easily analyzed and understood.