Variance

Statistics is a branch of mathematics that involves collecting data and interpreting it. It includes a variety of tests. One example of a statistical test that is used to organize data is the one sample z-test. In this statistical test, there is only one group being tested. The one sample z-test is used to compare a sample statistic against a population Salkind (2014). It determines whether a sample can represent a population. The information provided by the one sample z-test gives enough…

recommendation (A-D). The one way ANOVA variance analysis used to access the difference between the groups. All numerical data served as an instrument and a tool (Roddy et al., 2006). Though, group “B” in the randomized control trials is not accessible for certain recommendations, the data still held at 95%. The grade of the data is acquired in two ways. (1) By classifying the category of evidence, and (2) by giving a strength of recommendation. An ANOVA variance analysis test is performed in…

STUDY VARIABLES Predictor variables: The predictor variables were composed of a heterogeneous set of variables that were grouped into the 5 different categories: surgeon demographics, subject demographics, anesthesia risk factors,, procedure-related, and anesthetic medications. Surgeon demographic variables included age, sex, degree-status (single- or dually-qualified), board certification status (board-certified yes or no) and census region (midwest, northeast, south, west). Subject…

Reflection 30: Unexcused Absences ANOVA Methods An analysis of variance (ANOVA) test is used to evaluate statistically significant differences between two or more samples (Creighton, 2007). For this assignment, I tested the hypothesis stating there is a difference between the number of unexcused absences for ninth through twelfth grade students at North Panola High School (NPHS). To conduct my ANOVA test, I first obtained monthly absence data for ninth, tenth, eleventh, and twelfth grade…

Soil preference of the Red Compost Worms, Eisenia fetida INTRODUCTION Earthworms provide countless benefits to humans, plants and animals, by improving drainage, advancing nutrient accessibility, and providing a steady soil system, helping to develop farm production. They benefit the soil ecosystem by decomposing and recycling organic matter, opening up pores inside the soil to develop its formation and supplying food for predators . By adding nutrients to the soil they inhabit, earthworms are…

The data from the cytotoxicity study was analyzed using factorial analysis of variance (ANOVA) with statistical software Dell Statistica (data analysis software system) version 12, Dell Inc, Tulsa, USA, country (2015) available from http://www.Software.dell.com. The data from total GSH and ROS assays were analyzed using “one-way ANOVA followed by Dunnett’s multiple comparison tests with GraphPad Prism version 6.00 for Windows (GraphPad Software, La Jolla California USA,…

THP-1 cells and THP-1 cell culture methodology were also provided by Ondek Pty Ltd. THP-1 cells were cultured in RPMI-10 culture medium. The first THP-1 cell culture was made by Dr Senta Walton, with a starting concentration of 2 x 105 cells/mL. The cell culture was then incubated at 37°C with 5% CO2 and subcultured every 2-3 days, when the cell concentration reached approximately 8 x 105 cells/mL. THP-1 cell based assay THP-1 cell based assay was performed to determine the immune modulatory…

Ethical Concerns Experimental design is a field whereby ethical concerns are almost always a top priority. Although most individuals see ethical norms as common sense, they often vary from culture to culture and there can be discrepancies in the interpretation even by members within a certain cultural group. Furthermore, it is vital to determine any potential ethical concerns contained within an experiment and address those concerns in order to reduce their potential impact on the results.…

There were 281 participants in this experimental study. Most of the participants were family or friends of students in a research methods class at Florida International University, and they were recruited through email, personal, or telephone request. One hundred ninety one participants were female (68%) and 90 were male (32%). They range from age 13 to 92 (M= 32.33, SD= 13.58). This included 63 Caucasian participants (22.4%), 56 African American participants (19.9%), 8 Asian participants (2.8%)…

ACT 8-1 - Business Applications Case: Statistic versus flexible budget variances a) Did Atlantic increase unit sales by cutting prices or by using some other strategy? Atlantic did not increase sales by cutting prices for the actual sales price was higher than the budgeted price which is as follows: The budgeted sales price was $33,000,000/150,000 units = $220 per unit (Edmonds, Tsay, & Olds, 2011). Therefore, the actual sales price was $35,520,000/160,000 units = $222 per unit (Edmonds et…