Do you read faster or slower on a device like an iPad or Kindle, in comparison with a physical book? The overall answer, according to usability expert Jakob Nielsen, is about 5 to 10 percent slower (with the same comprehension of what was read). That's statistically significant, though not all that much slower. (We suspect it may have to do with years of familiarity with the form factor of the book.) More interesting was that on a 1 to 7 scale, users rated their satisfaction at 5.8 for the iPad, 5.7 for the Kindle, and 5.6 for the physical book, with the traditional PC trailing behind at only 3.6. follow link
Data Tables in Microsoft Excel 2008
Data Tables let you see how the results of a formula change as its underlying variables change. After entering data, select the entire table and choose Data > Table. Then tell Excel which row input cell and column input cells you want the table to use. Finally, click OK. Excel will crunch the numbers and present a new Data Table.
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- ExtraBITS for 5 July 2010 (04 Jul 10)
Jakob Nielsen Tests iPad and Kindle Reading Speeds
"More interesting was that on a 1 to 7 scale, users rated their satisfaction at 5.8 for the iPad, 5.7 for the Kindle, and 5.6 for the physical book, with the traditional PC trailing behind at only 3.6."
However, this is somewhat misleading. Those who read the original article will see that the sample size is quite small (27) and so 5.8, 5.7, and 5.6 for the ebooks and the real book is certainly a statistical tie. The writeup doesn't make clear whether the difference between those books and the PC was statistically significant or not.