00:01
Hi, i'm david and i'm here to help you answer your question.
00:03
In the question here we are given the graph of the cumulative frequency from the rise shows the amount spent by 70 customers and the clothing shop.
00:15
Now let me bring up the graph and put it on the top here.
00:19
And from here the first question a asking us to find the median.
00:25
The median it will be the value of the and the middle value and because we know that there are the trend the 70 customers therefore we will have the 30 70 we divided by 70 we divide by 2 it will equal to the 35 and then we see that the 35 will be somewhere here and then it will project it to the i will protect this one to the curve and we go it down here and then we see the median it will be around 25 so therefore the median it will be 25 and then for the question b want to find the lower quantite so it means that will be the q1 and q1 will be under 25 % so we have to take the 70 and then we would divide in by 4 and we take the 70 divided by 4 and equal to the 17 .5.
01:46
So it will be around the 17 .5 and we will see that 10, 20 this one could be the 15 and the 15 and 17 .5 will be somewhere here.
02:00
And it will project this one to the curve and then we project it down here so this one we can say this will be the 15 this one i can say it could be around the 18 so i can approximate this one will be 18 and then for the question c one have to find the upper quantite the upper quantite denoted by the q3 and q3 it will be within the 70 we divide by 4 but with times 3 and then we get the 7 and we have 17 .5 with times 3 equal to the 52 .5.
02:45
So 52 .5 it will be around here.
02:49
It will be the 52 .5.
02:51
So it will project it to the curve and then we're going down here.
02:59
We see this one it will be around the 32...