Mystery+Mixer

= Mystery Mixers = BACK TO MEASURES OF CENTER

Mystery Mixers in CODAP
Each mixer contains 500 numbers from 0 to 100. Predict what the distribution of all 500 numbers will look like as you increase the sample size (move the slider to the right). Ask students were the middle clump of data is located and to describe the distribution (mound shaped, skewed, etc.).

Rerandomize the Arbitrary Value IN THE CASE TABLE to generate a different order for cases to be selected.

http://codap.concord.org/releases/latest/static/dg/en/cert/index.html#shared=21537

Note: This activity introduced the learner to the sampler engine with hidden contents in the Mixer Device. The goal is to draw inferences about a population by looking at a random sample. Generating multiple samples from the same population will introduce the learner to variation. Students are introduced to the concept behind a hat plot as they focus on a range in the "middle" of the data set.