00:01
This question shows you a table of several animals, 13 animals, and the number of blood types at the exhibit.
00:07
First, it wants you to find the mean.
00:10
Now, the mean we know is the sum of all the x's divided by the number.
00:15
We can count them up and know that there are 13 different data points here, and when we add them all together, we get that the sum, the total, is 96.
00:24
So x bar is going to be 96 over 13, which we can find is about 7 .38.
00:31
So that's the mean.
00:32
Of these 13 animals, there are on average 7 .38 blood types that they exhibit.
00:39
Next, we want to find the median.
00:42
And we know when we have an n equal to 13, the median is going to be at position n plus 1 over 2.
00:51
In this case, 13 plus 1, which is 14, 14 over 2, 7...