1 00:00:05,620 --> 00:00:07,030 Hi, welcome back. 2 00:00:07,120 --> 00:00:16,090 In this lecture, you will learn how to avoid sampling error when you are doing that analysis, and 3 00:00:16,090 --> 00:00:23,070 this can be achieved by using multiple and bigger samples from the population. 4 00:00:23,200 --> 00:00:34,760 So we firstly ensure that there is sampling error occurred in the last video as a form using possibly 5 00:00:34,780 --> 00:00:46,450 so select that underscore part between two brackets months and both date as months and sum of total 6 00:00:46,450 --> 00:00:52,000 amount as total sales from bookings grew by month, order by month. 7 00:00:52,000 --> 00:01:00,310 And the query then I get the following that the output that July is the most months in the sales of 8 00:01:00,310 --> 00:01:04,810 tickets, then August, then June. 9 00:01:05,410 --> 00:01:13,770 Now we will avoid the sampling error of the last Viju as the following using orbiter left. 10 00:01:14,440 --> 00:01:25,390 So I will take more for bigger samples from the data sheet than the six samples I created in the last 11 00:01:25,390 --> 00:01:25,750 grade. 12 00:01:25,750 --> 00:01:26,620 You lecture. 13 00:01:27,860 --> 00:01:34,910 So I will firstly import Banda's module as b'day, then I will read the C. 14 00:01:34,910 --> 00:01:43,970 S v file from the database airlines that contains the whole column of bookings so that Sevan's Sambell 15 00:01:43,970 --> 00:01:51,070 will contain twenty thousand records from the data sheet and print the Sambell. 16 00:01:51,770 --> 00:02:00,020 Then I will visualise assembled to get that July is the most Dumond's and say it's in August, then 17 00:02:00,020 --> 00:02:00,440 June. 18 00:02:00,660 --> 00:02:04,170 Then I will take the eight Sambell as the following. 19 00:02:04,260 --> 00:02:08,240 You have eight equal D.F. the same bill between two brackets. 20 00:02:08,720 --> 00:02:10,100 Fifty thousand. 21 00:02:10,860 --> 00:02:18,120 Then I will bring the eight samples, then I will visualize the eight sample to get that July month 22 00:02:18,120 --> 00:02:23,250 is almost a month in the sales of tickets, then August is in June. 23 00:02:23,400 --> 00:02:33,320 Then I will take the ninth same bill as the following the F nine, the F dot Sambell between two brackets, 24 00:02:33,330 --> 00:02:34,840 one hundred thousand. 25 00:02:34,860 --> 00:02:36,960 Then I will present the nine to. 26 00:02:37,680 --> 00:02:42,330 Now I will visualize the nine sambal and I get that. 27 00:02:42,330 --> 00:02:49,990 July is the most months in the sales of ticket in our database airlines in August, then June. 28 00:02:50,010 --> 00:02:57,810 Then I will take the 10 same bill as the following day after an equal the f the same bill between two 29 00:02:57,810 --> 00:03:03,310 brackets, two hundred thousand d.f. them to print the ten Sambell. 30 00:03:03,360 --> 00:03:07,280 Then I will visualize the same bill as the following. 31 00:03:07,320 --> 00:03:08,800 I will get a chart. 32 00:03:08,820 --> 00:03:15,360 I can conclude that July is the most July is the most months in the sales of tickets. 33 00:03:15,570 --> 00:03:17,400 Then August, then June. 34 00:03:19,750 --> 00:03:27,940 From these figures, sambas, we get the same result as both degrees equal query that in the summer 35 00:03:27,940 --> 00:03:32,530 months, that July month is the most months in. 36 00:03:33,880 --> 00:03:38,680 Sales of tickets in August, then June. 37 00:03:40,350 --> 00:03:43,890 At this point, we reach the end of this lecture. 38 00:03:43,930 --> 00:03:46,950 Hope you enjoyed this lecture and get all of that. 39 00:03:48,950 --> 00:03:52,580 And learn to avoid sampling error. 40 00:03:53,780 --> 00:03:55,190 Thank you for being here. 41 00:03:56,050 --> 00:03:57,280 Thanks for watching. 42 00:03:57,310 --> 00:03:59,140 See you soon, goodbye.