Before class – Download this text file and import it into Microsoft Excel (it is available on the computer lab machines). Perform a t-test (assuming unequal variance, use alpha = 0.05) and determine the t-stat, degrees of freedom (df), and significance for a one-tailed test for the set of data. (Just type in “t test” in the help search box if you don’t know what a t-test is or how to do one.) Bring a sheet of paper with your name on it, with:
· the above three items (t-stat, df, significance)
· a list of the steps you took to complete this task (don’t include any steps involved with using the help feature or with installing the analysis tool pack)
· the user input required to transition from one step to the next, any feedback the system gave, and how the screen changed from step to step. [HINT: think about the list of information and interaction design attributes previously considered in an earlier Tuesday Activity]
In class – In your groups, decide on who has the most complete set of steps, input, system feedback, and screen changes. This description of the tasks will be used to fill out a chart. Use this set of steps to fill out a chart based on the Norman action models of HCI [page 111 in Rosson and Carroll]. First, list out and create a row for each step. Then, provide a brief characterization of what happens in each action stage. For example, the execution stage for a step might be “click ok button” and the perception stage might involve seeing “a new dialog box with four options.” Once the chart is filled, select a single step and come up with two (2) upside and two (2) downside claims for each of the stage of the action model. Highlight the three most important claims you would investigate through user testing.
In addition to each individual’s printout, each group will turn in the filled-in chart, a list of claims for a single step (24 claims total), and the three claims highlighted for user testing. A representative of the group will present on this single step in detail, talking about the complete Norman action cycle.
-Stages of Action-
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Group: List of Steps |
Action Plan |
Execution |
Perception |
Interpretation |
Making Sense |
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