Remember that we're working on a task completion example (a.k.a. a Bernoulli distribution). If you have time-on-task or satisfaction ratings you would do an entirely different type of analysis.
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Remember our scenario:
"Using Travelocity.com, find the cheapest flight from St Louis to Chicago."
And our goal:
To be complete, statistical conclusions should always include:
Below are the nine steps to accomplishing this goal.
Along the way we're going to talk about observed data (what we observed in the lab) and calculated data (what we've finagled with). Here's the observed data we've collected so far. Make sure that this makes sense to you because its the foundation for the rest of our analysis!
| Observed Data | Symbol | Formula | Value |
|---|---|---|---|
| Sample Size Number of participants who attempted this task. |
n | 10 | |
| Task Successes Number of participants who successfully completed the task. |
x | 9 | |
| Task Failures Number of participants who failed to complete the task. |
n-x | 1 | |
| Completion Rate | p | x/n | .90 |
| Failure Rate | q | (n-x)/n | .10 |