00:01
Hey there, welcome to numerate.
00:03
So we're asked to find a mean, median, and standard deviation of this following frequency distribution.
00:10
So with this, we're given a class and frequency here, and let's find the mean first.
00:18
So the equation for the mean would be m for the population mean equals the mean equals the sum of the frequency times our x.
00:38
Value which is basically the midpoint divided by the sum of f therefore this will equal the sum of f times x divided by so it is sum of all the frequencies let's calculate that right here sum of all the frequencies equal four hundred and fifteen or let's see now four hundred fifteen is thirty -four which will give us a mean that equals around 12 .21.
01:35
So great job in finding that 12 .21.
01:41
Now for our median.
01:48
Our median equals the middle value.
01:53
So if we go towards the one that has the highest frequency, we can find that our median equals around 12 .5...