WEBVTT 00:00:00.000 --> 00:00:03.000 Obviously, these are the numbers with which to compute the mean. 00:00:03.000 --> 00:00:10.000 With my calculator, I get the total sum of 153 divided by 7 gives me 21.85. 00:00:10.000 --> 99:59:59.999 Here it is.