tag:blogger.com,1999:blog-3998628784041768080.post3350713312521058292..comments2020-04-09T06:58:55.171+01:00Comments on VizWiz: The Pitfalls of Averages of AveragesVizWizhttp://www.blogger.com/profile/11408220384219218043noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-3998628784041768080.post-82820855852989252822017-02-15T12:22:51.652+00:002017-02-15T12:22:51.652+00:00Would be more accurate to talk about the average o...Would be more accurate to talk about the average of a ratio, instead of the average on an average. The index is calculated as a ratio, not an average. It's simply the 100 * (dollar spending in year X / dollar spending in 2008). It's not correct to take an average of a ratio, but it's a bit misleading to talk about averages of averages in this case.Anonymoushttps://www.blogger.com/profile/15476037729443774521noreply@blogger.com