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For online tools, the most common way to preserve your data is to download it as a spreadsheet file (ExcelXLS, CSV, etc.).

Download the entire data set and save it in a secure place. Explicitly name it as the original data, then never touch that file again. It’s not for later analysis – it’s simply a backup of your raw data in case Murphy’s Law strikes and you need something to go back to.

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This happens later in our analysis, when we’re examining where participants went for each task. Sometimes we’ll find that they have “discovered” answers that we should have marked correct at the outset. For more on this, see “Where people went” on page ~ Where they went later in this chapter.

When we find additional correct answers (and this is surprising common), we need to go back and mark those new answers as correct, then make sure that the tool recalculates the results accordingly.

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• Include content on that page that satisfies the given task, or
  
  
• Include a prominent cross-link to a page that does satisfy the task
  For more on cross-linking, see ~.
  
  
  

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