00:01
Shown here is a list of 27 songs from the artist diamond and the number of youtube plays for each of these songs.
00:10
We are first asked to find the sample mean for the number of youtube views per song as well as the sample standard deviation.
00:21
Obviously being 27, this would be pretty tedious to do by hand, so we're going to do it in excel.
00:29
So in excel, i've put all of the sample data for the number of youtube views per song in column a.
00:36
So we have all 27 data here.
00:39
To find the sample mean we use the average function and as the arguments to the function we enter all of the sample data.
00:46
And we hit enter and we get a mean of 132 ,251 approximately.
01:03
Let's go to one decimal place.
01:05
And for the sample standard deviation the function is the stdev .s where the .s stands for sample.
01:13
This is the sample standard deviation.
01:15
We get 8 ,000, 81 ,074 .8...