andrewgbruce / statistics-for-data-scientists

Code and data associated with the book "Statistics for Data Scientists: 50 Essential Concepts"
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Permutation Test Example: Web Stickiness #4

Open singing-scientist opened 7 years ago

singing-scientist commented 7 years ago

I am working through the example of session times in Chapter 3 > Permutation Test > Example: Web Stickiness. I have assumed that the data to which this example refers is that located in the file web_page_data.csv.

For pages A and B, respectively, it seems that the time is listed in the table as minutes, because the correct result for mean_b - mean_a (21.4) is obtained after converting to seconds. However, if this is correct, then Figure 3-3 is not. Figure 3-3 appears to show Time as minutes100, rather than as minutes60 (i.e., seconds). Which is correct?

Thanks!