Serial Killer Stats: Crunching the Numbers

Serial Killer Stats: Crunching the Numbers

A Year 7 Mathematics Investigation Using Statistics to Understand Real-World Data

What Are Statistics?

Statistics help us understand patterns in data We use numbers to describe and compare information Statistics are everywhere - sports, weather, population Today we'll investigate real criminal data responsibly

Our Learning Goals

WALT: Collect and organize research data WALT: Calculate mean, median, mode, and range WALT: Create graphs using Excel WALT: Analyze patterns in statistical data

Success Criteria - How We'll Know We've Succeeded

✓ Collect relevant statistical data accurately ✓ Calculate mean, median, mode, and range correctly ✓ Create clear graphs using Excel ✓ Explain patterns and trends in our data ✓ Handle sensitive content respectfully

Research and Data Collection

Work in pairs to gather data from provided sources Record: Number of victims, Age, Nationality, Gender Fill in your data collection worksheet Ask for help if you need clarification Remember: Handle this topic with respect

Calculating Central Tendency

Mean: Add all values ÷ number of values Median: The middle value when arranged in order Mode: The most frequently occurring value Range: Highest value - Lowest value These help us understand our data better

Calculate Your Statistics

Choose one variable from your data (e.g., number of victims) Calculate the mean, median, mode, and range Show your working clearly Compare your results with a partner What do these numbers tell us about the data?

Creating Graphs in Excel

Create Your Data Visualizations

Open Excel and enter your collected data Create a bar chart for at least two variables Add appropriate titles and axis labels Make your graphs clear and easy to read Save your work regularly

Reflection and Insights

Share one interesting pattern you discovered How do your statistics compare to your expectations? What was challenging about this investigation? How might statistics help us understand other topics? Review our WALT and success criteria