Lab 3A: The Results Are In!

Lab 3A - The results are in!

Directions: Follow along with the slides, completing the questions in blue on your computer, and answering the questions in red in your journal.

Conducting experiments

• Previously in class, you conducted an experiment to gauge how a stimulus affected people's perception of time.

  – Some people were given a treatment, others were not.

• In this lab, we'll use the data cycle to analyze the research question:

  Does the stimulus your class chose change people's perception of time?

Coming up with questions

• (1) Write down two statistical investigative questions that will help you answer the research question from the previous slide.

• Then, export, upload, import your experiment data into RStudio.

  – If you're having trouble coming up with good statistical investigative questions, try loading the data and looking at the variables.

  – Ask yourself, How would I use these variables to answer the research question?

Analyzing our data

• Create appropriate plots to answer your statistical investigative questions.

• Calculate appropriate numerical summaries to answer your statistical investigative questions.

• (2) Write down a few sentences interpreting your plots and summaries.

Wrapping it up

• Is it possible your initial results occurred by chance alone?

  – (3) Write and run code using repeated shuffling to determine how likely the typical difference between the two groups occurred by chance alone.

  – (4) Create a plot and use it to justify your answer.

• What do you conclude about the research question?

  – (5) Write a report using the plots and analysis you conducted to answer the research question.

  – Be sure to describe how you conducted your experiment.