00:01
In this problem, we have been given a list of scores of 15 students in the mathematics exam, and we need to determine the main median and mode.
00:12
So, since we need to find the median, first of all, let us arrange these data points in ascending order.
00:20
And if we arrange those scores in ascending order, what we have is 14, 18, 18, 20, 20, 23, 25, 29, 30, 33, 35, 45, 45, 48, 48, 50, and 50.
00:56
So, we have arranged the data in ascending order.
00:59
Now, let us determine the mean.
01:02
Now, the mean is equal to the sum of these data points divided by the number of the data points.
01:08
So we can write that as summation x divided by n.
01:12
So summation x is the sum of all of these numbers.
01:16
And if we add all of these numbers, we will get 482.
01:21
And there are a total of 15 data points.
01:24
It is said that we are given the scores of 15 students, and we can also count these and see that there are 15 of them.
01:30
So n is 15.
01:31
So the required mean is 482 divided by 15, and that is approximately equal to 32 .13.
01:38
So the mean is 482 by 15, which is approximately 32 .133.
01:45
Next, let us determine the median.
01:49
Now, n is this, in this case is 15, which is an odd number...