00:01
In this problem, we are given the data set which includes the values 14, 20, 14, 12, followed by 15, 25, 11, 23, and 28.
00:15
So first we are required to get the mean of this data set.
00:18
So for that, we will simply count and we see that the size of the sample, this is 9.
00:24
And to get the mean, we will simply use this formula, according to which we see that the mean value is obtained when we add the data values right from the first to the last and we divide this with the size of the sample.
00:38
And we see that this simplifies to 18.
00:41
And in the next part, we have to get the median.
00:44
So for that, we arrange the data set in the increasing order.
00:47
So when we do that, we will get 11, 12, followed by 14 appearing twice, then we have 15, 20, 23, 25, and 28.
00:59
And we know that the median is the value which is lying at the center of the arranged data set.
01:05
So we observe that the values which are lying at the center, well, they are 14, and 15, and 20...