APPLETS AND ONLINE TOOLS FOR STATISTICS

Titanic Data Exploration Activity for Categorical Data
One of the best categorical variables to explore is the data from the Titanic. We can look at the Survival rates versus the class, gender and age of the person. By exploring the data, we will see that there is a relationship between the different variables and survival rates. You were more likely to survive if you were first or second class and less likely to live if you were third class or a crew member. You were also more likely to survive if you were female or young. (Women and children first!)
  1. Go to the following website at the “Unusual Episode”. This website will give you all the information you need for the Titanic data: Show the two charts that show economic status versus age and economic status versus gender. Explore the percentages of death in each bar chart.
  2. Read the “Classroom Use” portion and use the questions with the participants to stimulate discussion.
  3. Summarize the relationship between age, gender, class and survival status using the charts as well as graphs that are found at another website that graphs the data for you. It is at Use this page so you do not have to spend the time graphing the data and you can easily and quickly see the relationship between the variables.

Use the following Illuminations grapher to graph the data if a TI-84 is not available:

Another online grapher is at the site below. This will also let students create histograms, bar charts, pie charts and boxplots.

This illuminations applet lets the student place points on a number line. It will plot the boxplot and locate the mean and median. You can illustrate how the mean and median are the same in symmetric data and how the mean is “pulled by the tail” in skewed data.

The following website has many applets to help explore statistical concepts:

This is where you can find a free graphing calculator that can do linear regression. It will plot your data in a scatterplot and find the least squares regression line:

This will take you to a correlation and regression calculator. It will plot the scatterplot, find the line, find the correlation coefficient and also plot the residual plot for you. When you go to the site, find the two-variable calculator :