Saturday, May 11, 2019

Statistical Tools in Research Essay Example | Topics and Well Written Essays - 500 words

Statistical Tools in Research - quiz ExampleA t-test is a statistical tool that can help evaluate the average results amid two independent groups (statsoft.com). In this case, the independent groups are the proposed and reported methods. The means of the two methods were compared to determine the value for the t-test (fao.org). The t-test value with their respective n degrees of freedom were determined using the Students t-test table, and the researchers were able to go out evidence that the proposed and reported methods are similar.The F-test is a proportion of the variances and measures the similarity of the results obtained using two different methods (fao.org). disposed the F-value for then degrees of freedom, the authors were able to establish that their proposed method is similar to the reported method. The accuracy of the method, expressed as % Recovery, was too measured. The recovery, in terms of percentage, is a ratio of the actual result and the theoretical value in th e national (Narayana and Sunil, 207 208).The take apart conducted by Ward et al. (696-698) also used the mean and SD to compare the pancreatic cancer cases brought near by nitrates and those of the control population. The researchers used the odds ratio and % confidence interval to quantify their observations. However, in the numeration of the odds ratio, adjustments had to be made to account for age, gender and smoking habits of the participants.The odds ratio is a ratio of the probability of a particular event or disease to occur with its probability of not occurring (Goldin, stats.org). The values obtained will have a maximum value of 1, which implies a 5050 chance of occurring and not occurring.The mean and standard deviation of results do not only provide the spread of the data in the population but can also be used to compare two different methods and pull through at associations between a disease andits possible causes. Narayana and Sunil were able to optimize the use o f statistics in the study that they conducted, with the use of the t-test and F-test.

No comments:

Post a Comment

Note: Only a member of this blog may post a comment.