Essays on Chi-Square

Apple VS. Orange

The order of values written in the table is: the observed cell totals, (the expected cell totals) and [the chi-square statistic for each cell]. The chi-square statistic is 1.4874. The p-value is .828872. The result is not significant at p < .05. Apple VS. 0.8 Sugar Water The order of values written in the table is: the observed cell totals, (the expected cell totals) and [the chi-square statistic for each cell]. The chi-square statistic is 4.6095. The p-value is .594776. The result is not significant at p < .05.

Banana VS. Tomato

The order of values written in the table is: the ...

B. OBJECTIVE

C. METHODOLOGY Over a period of time of four week study three generations of flies starting with a parental (P) generation that has already separate the flies in each generation of each cross into males and females and separate the flies according to their mutations. Based on the observed numbers of each phenotype in each generation of each cross hypothesize the parental cross and use the chi-square (x2) test and if there is little difference between the observed results and the expected results, the chi-square will have a low value, thus, the hypothesis will be supported in this case. ...

Article Review: Feminine Protection

Article The journal article was entitled “’Feminine Protection’: the Effects of Menstruation on Attitudes Towards Women”. It aims to determine the objectification of women by society with regard to reminding of her menstrual status. It was conducted by researchers Tomi-Ann Roberts, Jamie L. Goldenberg, Cathleen Power, and Tom Pyzczynski in 2002. It was published in the journal Psychology of Women Quarterly Volume 26 on pages 131 -139.

The primary research question in the study is whether there will be incidences of negative reactions and objectifications to women when they are reminded of their menstrual status. The researchers hypothesized ...

Introduction

In social research methods, inferential statistics has a core role to play in reaching the conclusion of the analysis. There are two types of analysis involved in a research study inferential statistics and the descriptive statistics. The amount of data gathered from different subject groups cannot solely help deduce the outcome and support of the hypothesis. Inferential statistics facilitates the researcher come up with a conclusion that goes beyond the immediate data. On the other hand, descriptive statistics enable the researcher to deduce information from the given group of data. This case study contributes to explain the various tests ...

Chi-square

The chi-square test is used to compare the theoretical and observed frequencies. The chi-square distribution is not symmetrical, as normal or t-distribution. The mean and standard deviation can be calculated for the normal, t-, and Poisson distribution. However, there is no need for these parameters in chi-square distribution. The significance levels are applied the same way as in other distributions. However, for chi-squared tests only one-tailed tests are applicable. Therefore, the calculated value is compared to the critical value for the right tail of the chi-distribution. The normal and t-distributions are applied only to numeric data, whereas the chi-squared ...

Ventilator-associated pneumonia

Abstract The intensive care unit in most hospitals plays the role of providing care to patients dealing with life-threatening conditions. The technological and other set ups in these hospital units are vital in ensuring that these patients continue to receive the best regarding care while with the intentions of having them emerge with desirable outcomes. There are however challenges relating to the care that these patients receive since, in most cases, they are usually under mechanical ventilation. A patient under this condition faces the risk of developing ventilator-associated pneumonia if the ventilators are not handled with the required care. ...

The study will use a quantitative research design. A quantitative research design allows for a faster collection of data compared to a qualitative design. It is also suitable for studying large population because it allows the researcher to use inferential statistics (Rubin, 2012). Therefore, the findings from a sample can be used to generalize information about the whole population. This study seeks to assess whether the high prices that Starbucks charges for its coffee drive consumers to its competitors. Therefore, the study is interested in all consumers of coffee at Starbucks. The population of interest is large. A survey ...

.GSS 2014 Statistical Analysis: Written up Assignment

Introduction

The GSS 2014 has been established with the view to generate ongoing research data on demographics of the country for social welfare and decision making. The General Social Surveys (GSS) have been conducted by the National Opinion Research Centre (NORC) annually since 1972, except for the years 1979, 1981, and 1992, and biennially beginning in 1994. The GSS surveys are supposed to be part of a social indicator research, applying questionnaire items and wording in order to facilitate time-trend studies. There are a total of 3,842 cases in the data set. ...

Abstract

Traumatic brain injury (TBI) is the bruising of the brain due to an impact received on the head. The brain injury can be termed as primary if its caused directly by the impact blow or secondary if its caused by reaction processes such as swelling due to inflammation. Common types TBI include hematomas, contusions, diffuse axonal injury (DAI), concussion, and coup/contrecoup lesions. The type of injuries are characterized by symptoms such as dizziness, headaches, amnesia, loss of consciousness, going into a vegetative state or a coma or death in extreme cases. There is no clearly defined body of knowledge ...

Proposal for Original Business Research

1.0. Introduction Human resource management has always been integrally attached to the business and its activities, as the degree of success or failure of a business largely relies on the effectiveness of HRM practices in an organization. One of the core areas to be pondered by human resource managers is performance appraisal when it comes to people management (Tooksoon, 2011). 1.1. Problem Statement High employee turnover is one of the most critical side-effects of growing dynamism of modern business climate. Employees are switching from company to company basing their decision of quitting for many good reasons. However, it is ...

Introduction

In 2014, despite the disappointing decrease in earnings of the mobile phones department and unconvincing performance of flagship Galaxy S5 sales, the Samsung company has succeeded in the US on the part of gaining the confidence of the market to the very brand by consumers. Thus, according to the results of a large study conducted in the US market, the Samsung took over the honorary title of the most revered manufacturer of mobile devices from the Apple Inc.. Annually updated index of consumer satisfaction (American Consumer Satisfaction Index), which is responsible for the accuracy of experts at Michigan State ...

Statistical Analysis 1: ANOVA

Statistical Analysis 2: Regression The regression model is satisfaction = 2.989 + 0.75Invest – 0.47alter + 0.509 commit. The first term is the intercept term; that is when x=0, the value of satisfaction is 2.989. Holding other factors constant, a unit change in investment, there is a 75% increase in satisfaction. Holding other factors constant, a unit increase in alternatives leads to a 47% decrease in satisfaction. Lastly, holding other factors constant, a unit increase in commitment leads to a 50.9% increase in satisfaction. The coefficient of investment, alternatives, and commitment fall within the 95% confidence interval.

Statistical Analysis 3: Chi-Square Test of Independence

The number of people sampled in ...