This is a practical exercise, where you need a big bag of gummy worms or equivalent a measuring tool (e.g., a ruler or measuring tape) For each gummy worm, stretch the gummy worm over the measuring tool until it snaps write down the colour, and the length at which it snapped When you are done measuring and eating gummy worms, gather the data into tables: one joint table, and one per colour or colour group (depending on how many tables your teacher has told you to make). Remember that these are grouped data. For each group:

• Create the frequency table Create the cumulative frequency table Draw a diagram for each table. (bar chart or histogram; which one do you think is suitable?)
  Draw a cumulative diagram for each table. (cumulative bar chart or cumulative graph; which one do you think is suitable?)
  Calculate the median and the mean for each group, and mark on the horizontal axis of the diagrams.
• Calculate the population standard deviation for whole bag, and the sample standard deviation for each colour group. Explain the difference and the connection.