EXTERNAL STUDIES SCHOOL OF CONTINUING AND DISTANCE EDUCATION DEPARTMENT OF EXTRA-MURAL STUDIES. LDP603: RESEARCH METHODS GROUP ASSIGNMENT GROUP 5 QUESTION: DISCUSS THE VARIOUS PROBABILITY AND NON-PROBABILITY SAMPLING TECHNIQUES USED IN RESEARCH. GROUP 5 (A) MEMBERS |S/NO |SURNAME |OTHER NAMES |REG. NO |SIGNATURE | | |GICHOHI |BENARD
Premium Sampling
SAMPLING Sampling is the act‚ process‚ or technique of selecting a suitable sample‚ or a representative part of a population for the purpose of determining parameters or characteristics of the whole population. REASONS FOR SAMPLING There are six main reasons for sampling instead of doing a census. These are; * Economy * Timeliness * The large size of many populations * Inaccessibility of some of the population * Destructiveness of the observation * Accuracy or Reliability
Premium Sampling Stratified sampling Sample
Random sampling is the purest form of probability sampling. Each member of the population has an equal and known chance of being selected. When there are very large populations‚ it is often difficult or impossible to identify every member of the population‚ so the pool of available subjects becomes biased. Systematic sampling is often used instead of random sampling. It is also called an Nth name selection technique. After the required sample size has been calculated‚ every Nth record is selected
Premium Sampling Sample
CHAPTER 7—SAMPLING AND SAMPLING DISTRIBUTIONS MULTIPLE CHOICE 1. From a group of 12 students‚ we want to select a random sample of 4 students to serve on a university committee. How many different random samples of 4 students can be selected? a.|48| b.|20‚736| c.|16| d.|495| ANS: D 2. Parameters are a.|numerical characteristics of a sample| b.|numerical characteristics of a population| c.|the averages taken from a sample| d.|numerical characteristics of either a sample or a population| ANS:
Premium Standard deviation Normal distribution Sample size
MAUREEN L. M. INTERMEDIATE MICROECONOMICS SAMPLING TECHNIQUES INTRODUCTION A sample is a unit or subset of selection from a larger population that is used in studying to draw conclusions regarding the whole population. A sample is usually selected from the population because it is not easy to study the entire population at once and the cost of doing so may be very high. The sample should be the best representation of the whole population to enable accurate outcomes and accurate
Premium Sampling Stratified sampling Sample
Sampling Techniques Worksheet For each description of sampling‚ decide if the sampling technique is A. Simple Random B. Stratified C. Cluster D. Systematic E. Convenience 1. In order to estimate the percentage of defects in a recent manufacturing batch‚ a quality control manager at Intel selected every 8th chip that comes off the assembly line starting with the 3rd‚ until she obtains a sample of 140 chips. 2. In order to determine the average IQ of ninth-grade students‚ a school psychologist
Premium Random variable Probability theory Normal distribution
Question 1: discuss any five (5) common sampling techniques used in business research. Support you answer with relevant examples. Simple random sampling: The simple random sampling is one of the most widely-used random sampling method. The term “random” here does not mean a haphazard selection as many people think. The “random” in this method means each member of the population has equal opportunities being chosen be subject and no one in the identified population who could not be selected
Premium Sampling Stratified sampling
There are many ways to select a random sample. Four of them are discussed below: Simple Random Sampling: In this sampling technique‚ each sample of the same size has the same probability of being selected. Such a sample is called a simple random sample. One way to select a simple random sample is by a lottery or drawing. For example‚ if we need to select 5 students from a class of 50‚ we write each of the 50 names on a separate piece of paper. Then‚ we place all 50 names in a hat and mix them thoroughly
Premium Sampling Sample Stratified sampling
density than a disturbed habitat. The experiment will investigate the sample area’s using the method of Quadrant sampling. Quadrants are placed in a grid pattern on the sample area. The occurrence of organisms in these squares is noted. It is used to estimate population parameters when the organisms present are too numerous to count in total. In this case‚ Quadrant sampling will be used to estimate and compare population species diversity and density of a abandoned lot and a city pathway using the
Premium Arithmetic mean Standard deviation Biodiversity
concluding that since the numbers decreased over the course of their institutionalization‚ therapeutic programming within the juvenile justice correctional system has proven to be effective with this class. With appropriate screening and assessment tools used to identify the histories of these juveniles‚ proper classification and treatment can be achieved in addressing these mental health issues and hopefully preventing future criminal acts following
Premium Child abuse Domestic violence Abuse