Statistical dispersion

Many data interpretation issues have been identified in the above mentioned studies conducted on yellow fever to determine the prevalence, distribution, determinants. Some of them include: • Measuring the burden of the disease which was caused by the yellow fever is challenging because of the wide range of the clinical severity and non-specific symptoms reported in majority of the infection. This has made diagnosis for yellow fever very difficult for investigators. It was found that the…

1. Measure the distance from the top of the third floor balcony to the first floor using a tape measurer. It should start from the top railing of the balcony to until it touches the floor. 2. Take a meter stick and place the front of the car at zero. Turn on the car and let it run until the front reaches the end of the meter stick. Make sure to use a timer to see how long it takes the car too travel that far. Divide the change in distance it travel by the time it took to find the velocity of…

The statistical test used in this experiment was a Chi-square test because it measures the goodness of fit. There were 370 trials performed in the overall experiment. The sample size in the experiment was 740. Each cricket whether it was labeled intruder or resident had an observed and expectant number times it should win. For the resident crickets, it was expected that the cricket would win 185 times in the experiment. The observed value was calculated to be 238 wins in the experiment as well.…

Hypothesis testing is used to state a claim based on a parameter and test the stated theory (Vasilopoulos, 2011). Crounse Corporation is considering making annual physicals mandatory for all employees. The company hypothesizes that employees who receive annual physicals will incur lower medical costs. A one-sample hypothesis test could be used to prove or disprove the company’s theory. A null hypothesis shows no relationship between two groups (Mirabella, 2011). In the case of annual physicals,…

Based on student responses from the questionnaire, students are spending significant amounts of time participating in extracurricular activities. Students are spending more time participating in arts, which includes band, orchestra, and fine arts and sports offered at middle school level like football, basketball, track and field, and swim. A substantial amount of students spent zero hours participating in extracurricular activities, seen in Figures 3 and 4. Figures 3 and 4 also demonstrate…

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…

Explore Correlation and Regression Using the explore function within SPSS gives a clearer view of how the data is represented. The explore function helps to assess the variables within the investigation by visually identifying various aspects of the data, therefor revealing the true nature of the data (Field, 2013). For example, the data in the Chamorro-Premuzic.sav file can be evaluated in a number of ways, for example analyzing the data based on the gender grouping allow one to visualize the…

between variables. This means that there is a linear relationship between the three variables in this study. Researchers can use regression analysis to estimate the values of the criterion variable, which in this case is the risk of divorce. This statistical technique is useful, although researchers are not to use regression analysis to predict outside of their range of observed results. In order to use multiple regression statistics, the researchers had to assume four things about their data.…

The foot is a complex conglomerate of joints, ligaments, and muscles. It is through the interplay of these structures which gives humans the ability to walk and perform different functional tasks in a bipedal stance. The foot is vulnerable to a significant amount of stress during the daily grind. Hence, these repetitive stress at times can be the antecedent to certain foot pathology. This theory on repetitive stress is currently one of the accepted causes of a painful foot condition known as…

Cumulative prospect theory ( cpt) Introduction Cumulative prospect theory (CPT) is a model for descriptive decisions under risk and crisis which was introduced by Amos Tversky and Daniel Kahneman in 1992 (Tversky, Kahneman, 1992). It is a further development and variant of prospect theory. The difference between this version and the original version of prospect theory is that weighting is applied to the cumulative probability distribution function, as in rank-dependent expected utility theory…