00:01
Hi, i'm david and i'm here to help you answer your question.
00:03
Now let me bring up your question here.
00:05
In the question here, we are going to discuss about the table of the frequency and as well as the o -giv curve.
00:13
Now we're given the list of the data and from the list of the data in the question a, i need to arrange the data into the group frequency distribution.
00:22
Then i will make the table on the group frequency here, and this will be the class, and there will be the frequency.
00:30
Now the class here will start with the lower limit under 30 and then we will have the class could equal to the 10, so this is up to the 39, 40 up to the 49, 50 up to the 49, 50 up to the 59, and then 60 up to the 69, 70 up to the 79, and then we have the 80 over to the 89, 90 over the 99.
01:04
And then we will count how many data will be between the 30 to the 39.
01:10
We have here will be 1, 2, 2 of them.
01:19
And then from the 40 to the 49, we will have 1, 2, 3 of them.
01:29
From 50 to the 59 1, 2, 3, from 60 to the 69, we will have 1, 2, 2 of them, and from 70 to the 79, 1 ,000, and from 70 to the 79, 1, 2 ,000, 1, 2 ,000, 1, 2 ,000, 6 of them, from 80 to the 99, 1, 2, from 90 to the 99, 6, 6 of them, from 80, from 80, 9, we will have one, two.
02:11
And then the next question here, ask that you determine the mean and the month from the draw data.
02:17
Now we will need to find the mean first.
02:22
We do it down here.
02:24
So the mean it will equal to the sum and then we divide by n.
02:29
And using the raw data, i will remove those one and they will add up and they will divide by n which is equal to the 20.
02:36
Here we have the 50.
02:38
87, 83, 78, 45, 61, 76, 48, 65, 44, 79, 71, 73, and 86, i think i missed one, so let me compute again.
03:11
Here we have the 57, 83, 78, 45, 61, 76, 48, 74, 79, 71, 73, 78, 75, 44, 79, 71, 33, 78, 78, 78, 78, 34, 74, 75, 59, 59, 59, 53, 53, 53, 53, 53.
03:45
And the 86 then we have the sum on the x it will equal to 1318 divided by the 20 and equal to the 65 1 .9 and then we will find the most the mode the mode will be the value that will be repeated most of the time we will see that the value of the 30 we will have here the 30 it doesn't repeat the 30 is the 30 is the the 40s, we will have no repetition here.
04:20
And for the 50s, we will have 57, 53, 55, no repetition.
04:30
And the 60, 61, 65, and we have no repetition for the 70.
04:39
We have 78, 76, 78 will be repeated twice here.
04:44
And then we will have three times.
04:47
And then we will have for the 80s we will have no repetition for the 80s and for the 90 we would have no repetition therefore we have the most equal to the 78 and that will be the answer for the question b for the c we need to find the percentage of the meal that cost more than the 75 more than the 75 more than 75 so we have so we have so far will be the two of them.
05:22
So we need to know how many more of them...