Lab 3A: The Results Are In!

Lab 3A - The Results Are In!

Directions: Follow along with the slides and answer the questions in bold font in your IDS 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

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

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

• If you're having trouble coming up with good statistical 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 questions.

• Are there any outliers or unusual observations that require some cleaning before you can interpret your plots?

• Calculate appropriate numerical summaries to answer your statistical questions.

• Interpret your plots and summaries.

• Write down a few sentences with your interpretations.

Wrapping it up

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

• Use repeated shuffling to determine how likely the typical difference between the two groups occurred by chance alone.

• Create a plot and use it to justify your answer.

• What do you conclude about the research question?

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

  – Be sure to describe how you conducted your experiment.