Simple Random Samples From a Table of Random Numbers

Simple Random Samples From a Table of Random Numbers There are a variety of different types of sampling techniques. Of all statistical samples, the simple random sample is indeed the gold standard. In this article, we will see how to use a table of random digits to construct a simple random sample. A simple random sample is characterized by two properties, which we state below: Every individual in the population is equally likely to be chosen for the sampleEvery set of size n is equally likely of being chosen. Simple random samples are important for a number of reasons.  This type of sample guards against bias.  The use of a simple random sample also allows us to apply results from probability, such as the central limit theorem, to our sample. Simple random samples are so necessary that it is important to have a process to obtain such a sample.  We must have a reliable way to produce randomness. While computers will generate so-called  random numbers, these are actually pseudorandom. These pseudorandom numbers are not truly random because hiding in the background, a deterministic process was used to produce the pseudorandom number. Good tables of random digits are the result of random physical processes. The following example goes through a detailed sample calculation. By reading through this example we can see how to construct a simple random sample with the use of a table of random digits. Statement of Problem Suppose that we have a population of 86 college students and want to form a simple random sample of size eleven to survey about some issues on campus. We begin by assigning numbers to each of our students. Since there is a total of 86 students, and 86 is a two digit number, every individual in the population is assigned a two digit number beginning 01, 02, 03, . . . 83, 84, 85. Use of the Table We will use a table of random numbers to determine which of the 85 students should be chosen in our sample. We blindly start at any place in our table and write the random digits in groups of two. Beginning at the fifth digit of the first line we have: 23 44 92 72 75 19 82 88 29 39 81 82 88 The first eleven numbers that are in the range from 01 to 85 are selected from the list. The numbers below that are in bold print correspond to this: 23 44 92 72 75 19 82 88 29 39 81 82 88 At this point, there are a few things to note about this particular example of the process of selecting a simple random sample. The number 92 was omitted because this number is greater than the total number of students in our population. We omit the final two numbers in the list, 82 and 88. This is because we have already included these two numbers in our sample. We only have ten individuals in our sample. To obtain another subject it is necessary to continue to the next row of the table. This line begins: 29 39 81 82 86 04 The numbers 29, 39, 81 and 82 have already been included in our sample. So we see that the first two-digit number that fits in our range and does not repeat a number that has already been selected for the sample is 86. Conclusion of the Problem The final step is to contact students who have been identified with the following numbers: 23, 44, 72, 75, 19, 82, 88, 29, 39, 81, 86 A well-constructed survey can be administered to this group of students and the results tabulated.

How to Write a Perfect Truck Driver Resume (With Examples)

How to Write a Perfect Truck Driver Resume (With Examples) Whether you’re a veteran of the open road or someone who feels the freedom and independence of driving for a living calling to you, there’s no denying the appeal of a career in trucking and logistics. If you have a clean driving record and don’t mind spending most of your days with mostly the radio for company, it’s a great field. Let’s look at the truck driver resume for people in the trucking industry. One is just starting out, another has been on the road for a while, and the third is a trucker looking to trade in the keys for the next step up: a managerial position in the logistics industry.1.CDL Certified Truck Driver Resume2.Experienced Truck Driver  Resume3.Driver  Manager ResumeFirst up is Barbara. She’s a newly certified commercial driver, looking to trade in her local delivery experience (pizza and packages) for bigger cargo.Download This Resume in MS WordBarbara Jones 765 Garden Street Pawnee, IN 34343 BarbJ@emaildomain.com (77 7) 444s)How to Write a Perfect Occupational Therapist ResumeHow to Write a Perfect Physician Assistant Resume (Examples Included)How to Write a Perfect Receptionist Resume (Examples Included)How to Create a Perfect Retail ResumeHow to Write a Perfect Sales Associate Resume (Examples Included)How to Write a Perfect Social Worker Resume (Examples Included)How to Write a Perfect Truck Driver Resume (With Examples)