ipl-logo

Disadvantages Of Non Probability Research

752 Words4 Pages

Nonprobability samples (Non-representative samples) Non probability samples are less taken into account than probability samples, as they are not the precise and reliable reflection of the population. They are not the true representative of the population. This sample type does not give all the individuals in the population equal chances of being selected. It means we are not sure that each population element will be chosen. Non-probability sampling methods has two main advantages, that is convenience and cost, but the main disadvantage is that non-probability sampling methods do not help you to predict the extent to which sample statistics can be different from the population parameters, so valid inferences cannot be drawn Non probability …show more content…

It depends on the purpose of the research which the researcher has holds in his frame of mind and researcher selects a population on the bases of knowledge about the population and the problem or issue itself. So participants are selected on the bases of study’s purpose. The sample should comprise of the individuals who meet the category or criteria being set for the research objectives. For example researcher investing a cosmetic product which is designed only for the females between 50-60. The researcher does size up the individuals passing by who seems to meet that criteria or be in that category (only females between 50-60). Researcher stops them and asks them if they are willing to participate. The advantage of purposive sampling is that may be very beneficial for situations where you want an immediate response from the targeted sample and where proportionality is not the basic concern. The disadvantage involves that researcher may tend to overweight subgroups in the population which are more readily reachable and …show more content…

Researcher begins by identifying individuals who can fulfill the criteria for inclusion in the study, and then he/she asks these individuals to suggest or recommend more other people who are able to meet the required criteria or category. The advantage of this method is that this sampling method is particularly beneficial when the required number of participants is not available and might be difficult to search. For example, a study on working current heroin users, it is difficult to find heroin addicts openly everywhere according to required number of sample size but it is possible when you contact a n heroin addict, he must know other heroin addicts and thus can recommend more heroin addicts. Although this method may hardly reflect the representative samples, at times it can be the best method available. Snowball sampling is especially useful when researcher is attempting to reach populations that are

Show More
Related

  • Qlt1 Task 4

    354 Words  | 2 Pages

    To select the sample for this study, data will be collected from two businesses; Alabama Power and Blue Cross and Blue Shield of Alabama in Birmingham, Alabama. The surveys will include segments in which the participants were asked to give an account of their; workplace, supervisor-subordinate relationship, leadership, employee performance, and organizational performance at the workplace (Scheidt-Nave et al., 2012). The other possible data collection may come from Survey Monkey.   The instruments used for this study will be the OPS (all 67 participants will evaluate the organization), 360-degree feedback (57 subordinates will evaluate their supervisors and 10 supervisors will evaluate their subordinates), and the GRS (10 supervisors will evaluate their subordinates and 57 subordinates will evaluate

    Read More

  • Psy 315 Week 3 Study

    676 Words  | 3 Pages

    Stratified Random Sampling because she chooses students equally from girls and boys group. e. A researcher wants to analyze the issues that teacher’s in her district believe to be detrimental to student achievement. He prints a list of all 2,200 district employees and choose every 8th person on the list to be in his

    Read More

  • Isaam 520 Final Paper

    537 Words  | 3 Pages

    Time and cost are also factors that need to be taken into account. The precision will be higher and the sample error will be smaller from a sample of 5 to a sample of 1000, however after about 1000, the differences in precision and sampling error become less noticeable. Another factor is the amount of people who will be non-responsive. When you think about the size of the sample, you have to think about the number of people who will not respond to make sure that the number that does respond is still large enough to be significant. You need to also think about the heterogeneity of the population; are the people of the sample more the same or more different.

    Read More

  • Influenza Vaccination

    598 Words  | 3 Pages

    One aspect of public health research method that I learned is that measurement is central to quantitative research because it provides the fundamental connection between empirical observation and mathematical expression of quantitative relationships. I also learned that the goals and techniques associated with probability samples differ from those of nonprobability samples. If we want to get results that are valid for the whole study population, we should know how to draw a sample in such a way that it is representative of that population. But it is not necessarily that nonprobability samples are not representative of the population. It means that nonprobability samples cannot depend upon the rationale of probability

    Read More

  • Quantitative Research: The Uniform Crime Reproting

    1219 Words  | 5 Pages

    • The accuracy of the information reported within the reports being used in the research study. • Recalling the incident for the victim can be very uncomfortable and upsetting. • There can also be limitations of some ethical obstacles for example if some cases are still open cases, information may not be able to be discussed. • With the survey sampling method, putting together a survey limits one from asking questions that normally may have been encountered in a one on one

    Read More

  • Police Brutality

    1384 Words  | 6 Pages

    Surveying would then be pushed into actual realization with asking a specified number of both civilians and officers for a fair result on opinions. After surveying the next research method, I believe best for this research topic and the discussed views quantitative research as statistics relate well for research. Numbers are a large part of facts, having percentages and other statistics increase accuracy on the studied topic, and a better understanding on the aspects the numbers cover. When researching this topic I would put these methods into use along the way, with every step. So, that I might be able to better understand and so that those who read or participate in the survey and paper will understand.

    Read More

  • Disadvantages Of Evidence Based Practice

    2251 Words  | 10 Pages

    Evidence based practice (EBP) is a process of integrating high quality evidence into practice or care provided by health professionals and decision makers in health care. This discussion will explore the meaning of the term Evidence Based Practice further and discuss its origins. EBP requires finding the best available evidence to inform practice, its greatest benefit being the best possible care for a client. Other benefits and limitations will be further discussed below. EBP demands the client be seen as an individual and their unique circumstances be considered in the application of evidence

    Read More

  • Longitudinal Research Essay

    474 Words  | 2 Pages

    Once the sample is chosen, psychologists would evaluate the subjects on a regular basis throughout the study so the information can be compared to previous

    Read More

  • The Pros And Cons Of Psychological Research

    1861 Words  | 8 Pages

    Introduction Psychological research and its findings have profound impact on people, relationships, and institutions in our society (Willig, 2013). However, as any other study, psychological researchers are faced with enormous limitations including inappropriate designs or methodologies due inadequacy of professionals (Wang, et al., 2015), geographical differences that impacts on generalizations (Smith, 2015), and time pressure that negatively affects the quality of a research (Punch, et al., 2014). Language barrier and lack of literature or poorly done review are other factors that affect psychological research (Willig, 2013). Limitations Limited number of professionals in the psychological research is one of the key limitations to this field of study. Psychological research depends on observations, experimentation, and evidence, hence the need for critical methodological designs (Shipman, 2014).

    Read More

  • Disadvantages Of Geologists

    754 Words  | 4 Pages

    Prorates of Geologists in Movies, Fact or Fiction Geology is one of the STEM practices that doesn't get much attention in mainstream spaces. Many relatively recentresent films, such as the movie 2012 shows, white collar scientists collarcolor scientists delving? into a mine, andor pouringporing over data on a computer before to big disaster. Then you have movies like Armageddon and Volcano, where the brave geologist must work on the proverbial front lines to save humanity from the impending natural disaster. Regardless of examples, geologists have a rather interesting position as being portrayed usually as the good guys, where as any other STEM profession is about fifty fifty hero or villain.

    Read More

  • Pros And Cons Of Study Chronic Depression

    147 Words  | 1 Pages

    Although I have not had a chance to help or conduct a research, I think all methods of study contain a bit of bias. After, researchers and scientists are human. Anyhow, random assignment is a useful technique yet, it is important to consider other possible methods of assignment and to work out which one will beneficial for the study the most before committing to one type of method since there many types of samples. For instance, if the experiment were to look at the treatment of depression using Electroconvulsive therapy (ECT) treatment and drug therapy, it would be hard to randomly allocate the groups. Studies have shown that people with severe, chronic depression recover better than those with mild depression when it comes to ECT treatment.

    Read More

  • Strengths And Weaknesses Of Research Paradigms

    1333 Words  | 6 Pages

    This literature review will be covering the topic on research paradigms. There are three major paradigms in the research paradigms which are the positivist paradigm research, interpretivist paradigm research and critical paradigm research. Each research paradigm has its own strengths and effectiveness due to their unique features which are specific to their particular approach as well as weaknesses. All researchers have their own beliefs and methods while conducting a research. Therefore, the ways of research studies conducted are vary.

    Read More

  • Disadvantages Of Scientific Management

    1450 Words  | 6 Pages

    A. Introduction Traditional management was established in the late 1900’s, after the industrial revolution swept world. Large factories were built using huge numbers of workers on production lines working with machines rather than the early skilled crafts men and lowered the price of the products produced. With high numbers of employees, there was a demand for a better method of management to control, plan, organise and lead the workers. Without an efficient method the revolution faced a threat of collapse as high volumes of workers were forced to work long, tiring hours at a low rate of pay.

    Read More

  • Scientific Method And Random Assignment

    211 Words  | 1 Pages

    Random Assignment is when every subject in the experiment should have an equal chance of being placed in either the experimental or control group. 3000 people from all over the nation volunteering is an example of this because they are all random individuals that will be involved in the experiment. In the time span of November to January,

    Read More

  • Interdisciplinary Research Advantages And Disadvantages

    1084 Words  | 5 Pages

    Introduction We live in an increasingly interconnected world. Human actions stretch to and resonate in every part of the world. Because of increased global connectedness, humanity now faces a myriad of new challenges, complexities, and problems. More and more, academics, educators, policymakers, and researchers have advocated for an interdisciplinary approach to problem-solving in a twenty-first century world with its growing complexities and new challenges.

    Read More

More about Disadvantages Of Non Probability Research

Open Document