00:01
For this problem to begin, we want to find the mean of the distribution of ages in years.
00:07
Now, to find the mean of a dataset, all we need to do is take the sum of each value, then we divide that by the number of values.
00:16
So you can see here that i've copied down the ages into my software and called the variable x.
00:22
If i do total of x, that just gives me the result of adding together all of the values.
00:27
So we can see that the sum of all of the ages, our numerator there, is 124, and we know that there are 12 pennies.
00:35
So the mean is going to be 124 over 12, which gives us a result of roughly 10 .3.
00:45
Now, to find the median, the first thing that we need to do is we need to sort the data set.
00:54
So let's see here.
00:57
Once we have the data sorted, we want to determine the location of the median.
01:02
It's going to be n plus 1 over 2, where n is the size of the dataset...