Stratified sampling

To better understand the scientific question in our case study, we had to first identify the variables of interest, the population, the sample, the parameters and statistics of the dataset. The variable of interest for this study is tip amounts, as that is what the owner of Sofrittos is analyzing. The population of the data set is tips received by Sofrittos waiters and waitresses, while the sample is the 80 tables of diners collected from the Bureau of Labor Statistics. The parameter of the…

which is how and can you actually gather the data, the instrument development, which is to put the data into context, and the third process which is going to be discussed in this chapter is the sampling process, which is a representative population on a broader scale. The third process known as the sampling process can also be call a research design. This step of the process involves comparison and seeing if there is a strong correlation between the data that is collected. To start off, there…

Data Collection The purpose of this data collection is to answer the principle research question, “Are UAS a practical alternative to monitor air quality and levels of pollution?” and use that data to accept or reject the hypotheses. In planning for data collection, P. Leedy, & J. Ormrod, authors of Practical research: Planning and design (2016) have established five essential questions that need to be answered: 1. What data will be collected? 2. Where are the data located? 3. How will the…

and cell phone while both are in landline and cellphone frames. Gallup uses its weight to final its samples and to match the national geographic's of each country. The margin of error for each sample influences the data weighting. Along with the sampling error, questioning the wording and practical difficulties in conducting these surveys can introduce error, or bias into the findings of opinion polls. In the Gallup World Poll they use multiple things to make sure that their surveys are the most…

there are two different survey methodologies used, which are population studies and sampling. Both methods can provide meaningful as well as accurate data, but noticeable limitations can be encountered as well as advantages gained from these methods. Thus, in classic statistical usages, populations are generally enormous; therefore, when the budget and human resources have limitations, and time is of the essence, sampling becomes a viable option. Moreover, the reasoning behind this statement is…

This study is based on conceptual framework from Donabedian (1966) McCkorkle et al. 2011. Mitchel, Ferketish and Jennings (1998) state: Donabedian 's perspective was essentially linear, assuming that structures affect processes, which in turn affect outcomes. Patient characteristics are sometimes considered as mediating outcomes and clinical interventions are considered to be processes” (Mitchel, Ferketish and Jennings, 1998). Per Grove, Burns and Gray (2013), the Design of this study is a…

effects on college students ' intellectual functioning, medical and cognitive health (2013). Our study aims to provide insight on the ways in which sleep quality influences quality of life of undergraduate students at OU. Sample Frame, Population The sampling frame is undergraduate students enrolled at the University of Oklahoma. The list of components, from which the sample is designated, was formed through careful consideration…

Chlamydia screening for all females in juvenile detention amenities is suggested at the Centers for Disease Control and Prevention (Torrone et al., 2015). Recognizing common factors of chlamydia could allow only specific screenings which would then reduce costs while still revealing many infections (Torrone et al. 2015). The study used various factors to classify features affiliated with chlamydia among females aged 12 to 18 years old in a juvenile detention facility in San Diego during January…

Sampling error is a common problem during social science research. As the researcher comes up with a hypothesis he needs validated by data, the next step would be to identify the target population. This stage is critical to getting accurate, and reliable data that can be used to explain the hypothesis the researcher has come up with. One of the most common problems during sampling is avoiding generating a biased procedure. It is important…

Different research work has different sampling techniques. I have done observational study under which I have to analyse the collected data of already published articles. Because of the observational type of study there is no definite sampling technique is used in this study. 3. How many participants will be involved? My research work is literature review so there are not any active participants…