Random sample

concentration. Evident in Graph 1, the results contained scatter, and consisted of an outlier in the sample in which the ratio of NaCl: deionised water was 10:30mL. The outlier and scatter may have been due to random errors, which caused the results to be unreliable. Due to this, the raw data does not support the hypothesis. Thus, a line of best fit was drawn in order to reduce the effect of random errors, and statistically remove the outliers, to give a better representation of what the results…

retained. The population that was being targeted in this study was the 3 years old. The preschoolers were the group of people they wanted to learn about. (Dyer, 2017) Simple random sampling would have been the best to use because every member within the population would have an equal chance of being selected. (Dyer, 2017) Simple random sampling would of been the best because it can be a small enough group to be able to obtain the desirable results. 3. What is one ethical issue that the…

A weakness in this experimental design is the manual dilution of the Aquasol concentrations. This is because, if a random error were to occur, and the diluted Aquasol concentration does not result in the desired concentration, the validity, reliability, and precision of the results is majorly decreased. Whereas if the Aquasol concentrations were already previously diluted in a lab by professionals, or were bought in the correct concentrations, the reliability, validity, and precision of the…

Studies and information gathered from the population offers a valuable tool for a marketing manager to utilize when one is trying to increase wine sales in an operating establishment. Many studies exist, which concern factors shown to influence dining satisfaction such as the quality of food, the quality of the service, as well as the environment and ambiance. However, nominal research exists, which focuses on the customer’s satisfaction with wine when they are in a restaurant atmosphere, while…

a) Sample selection size varies for each experiment, depending on how large the whole group under investigation is or how much time it would take to sample a certain group (Rathburn, MacConnadchie, Zizler, Hill, & Moorman, 2012, p. 72) . Sample selection is important part of a studies experimental design because it usually decides how valid a study is. The validity of the sample size and study is usually decided through the peer-review process, which is one of the reasons why the peer review…

1. “When investigating a large population, it is often impractical and usually unnecessary to measure all the elements in the population of interest. Typically, a relatively small number of subject or cases is selected from the larger population.” (McMillian, 2012, p.96) According to McMillian (2012), population is a target you want to study to develop knowledge and to create action plans to assist those individuals. An example is when a researcher use a group of students with autism to find out…

Notably, random sampling method was applied in the research. This ensures that error that result from bias are zero rated in the research. Moreover, random sampling is easy to apply as well as accurate in cases of large population under study, as was the case with music therapy. Overall, the selected sample represents 17 percent of entire population of study in the research conducted. However, the sample size is below 43%, which is the ideal percentage at…

primary caregivers to adolescent insecure attachment, intending for a working model of attachment and metallization during adolescence (Boreli, Snavely, Compare, Decio, 2014). Although the study used robust sampling methods, it used a low-risk Italian sample population (Boreli, Snavely, Compare, Decio, 2014) which limits broader application. Therefore it only allowed for investigation on the link between neglect and attachment security, and could not confirm causation. The Research Ethics Board…

Overall, I rate this article as a 4 out of 5. It is very well organized, presents samples and comparisons and is very well written. The only thing, I would change in this article would be the organization of the topics. For Example, The hypotheses, methods and procedures were placed at the end with the results. I believe the hypotheses, methods, and procedures would have been more effective placed at the beginning of the article before the presentation of the data that is broken up into sections…

are respondents who are preferably the primary purchaser in their household and have some knowledge regarding EF products. The more accurately we are able to have our sample represent this population, the more accurate our final results will be. Since our main sampling method uses the convenience approach, the majority of our sample will be UFV students. Our working population, the UFV students, represent the multicultural aspect of our target population well. UFV has a variety of students from…