Nonprobability sampling

Introduction The purpose of this chapter is to present the research philosophical underpinnings and methodological process of the study. This chapter outlines the conceptual framework, research philosophy, research design, population of the study, sampling design and procedure, sample size, data collection instruments, data collection procedure, validity tests, reliability test, data analysis method and ethical consideration. 3.1 Conceptual framework Fig.6. conceptual framework…

2012 and spring of 2013, the T-DDIS was then distributed to the 10 schools; whereas five were elementary, two were middle and three were high schools (Greer, 2013). There were 238 participants recruited by invitation through purposive and snowball sampling techniques that completed the survey; which included K-12 schoolteachers, leaders and support staff (Greer, 2013). According to the California Department of Education’s (2013) DataQuest summary, there were approximately 285,308 teachers in…

stages. Fixed sampling requirements Sample sizes required for fixed precision at precision levels of 0.1 and 0.25; according to many studies, these numbers will be high, and because of the time required to count the pest on leaves, binomial sequential…

Although the data seems to be representative, there might be some sort of sampling error that could have occurred. If I were to replicate this experiment, I would have more representations of races. In the sample described by the authors, the majority of the participants are Asian and Whites. Asians and Whites are over represented in this research and can cause a sampling error to occur. The hypothesis and result might change based on this change to make more of an equal…

feasible, given time and logistical constraints. A weakness of quasi-experimental research is the lack of random assignment, reducing internal validity. However investigation in real-world conditions increases the external validity. This design could be strengthened by including a control group comparison, comparing HAI rates in another LTCF to determine if there is a similar trend at baseline and at specified collection points. One study was an uncontrolled before and after study. Pittet…

students, thus they are not a representative sample of the entire world population. To solve these weaknesses, we proposed to make the violence the participants experience, more comparable to real-life violence. Secondly, we would use multi-cluster sampling to ensure our sample is representative of the entire population. Moreover, we would prolong the experiment to determine whether desensitization holds in the long…

Introduction The introduction of the study explores the idea that television engagement has negative effects on Australian adolescent weight, flaws contained within the introduction are • First sentence was supported by nonexistent source, questioning study reliability and credibility • Comparison of Australian and American BMI, without taking into account cultural differences • Hypothesis do not predict the outcome of the study and multiple unnecessary secondary hypothesis (can be compacted) •…

The quantitative has been chosen due to its collection analysis data in numbers. The main center of attention of this essay is to critique a research paper by highlighting is strength and weakness. Strengths in term of its exactitude, control from sampling and plan, the aptitude to create a true image by the use of controlled experiments, statistical tools used for analysis and if the research can be reproduced.…

In the American political system, opinion polls are an important way to measure the general public’s ideological beliefs and opinions on certain key issues. According to Patterson, a public opinion poll is, “a poll or survey in which a relatively few individuals are interviewed to estimate the opinions of a whole population” (2013). These types of polls are also used to see which candidate the American people prefer in presidential election years. This election cycle is no different, especially…

In terms of primary data, questionnaires and structured interviews were conducted to obtain quantitative and qualitative data. With questionnaires, I chose to use the simple random sampling method when distributing my questionnaires to obtain the most accurate, valid and unbiased data. Of the 30 questionnaires distributed 30 were obtained. At particular pre-selected time intervals (during school) I distributed questionnaires in sets of three to individuals ranging from twelve years old to the…