The majority (59%) of the respondents were male (figure 1). The majority (63%) of the respondents were married (figure 2). The education level of the respondents was less than high school (2%), high school diploma or GED (31.5%), associate two-year or junior college degree (19%), bachelor’s degree (27.5%), master’s degree (10.5%)
The study makes several conclusions in the first analysis. The first major conclusion is that there is a strong positive correlation between male life expectancy and female life expectancy for the sample countries. Secondly, the mean GNP per capita in the sampled countries from Africa is significantly different from the World Bank’s GNP.
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This report is all about the statistical analysis of that data. The aim is to figure out and highlight the problems through using statistical procedures and to produces recommendations for solutions through appropriate analysis of the given data. In this report, the problems related to the following areas are indicated and the recommendations are made.
The primary objective of this research is to develop a tool through which we can qualify traditional measures of crime rates through how citizens perceive the frequency occurrence of crime, how safe they are from crimes, their attitudes towards crime and prevention/response.
The research paper would give a brief history of the hotel and evaluate the current situation in terms of its internal and external benchmarks. The solution to rectify operational management and delinquencies would take into account both of these functions in order to mitigate business threats.
In geographical areas like Europe and America, there are a vast variety of people residing, who categorically belong to various social groups. Very often the behaviors of these different people are explained by the common characteristics of the social groups they belong to. Here comes the concept of stereotyping.
The results of the test were statistically not significant, χ2(1, N = 316) = 1.37, p = .242. Thus, the null hypothesis is retained; the gender and bilingual capability are independent. In other words, there is no evidence to conclude that boys tend to be put into bilingual education more often than girls
The objective of the paper was to analyze the stop and search activity that the police had conducted. They wanted to evaluate the data they had collected so that it may be found out whether it was any good for the detection and prevention of crime within the area. The data currently at hand is obtained via a generic stop and search operation conducted.
The author states that China is fast approaching the value of the United States in terms of exports and is an important destination for imports. India and the Asian countries have also shown export growth in these years. India’s export growth is fast growing that is already similar to China.
A qualitative research must, on the other hand, avoid the use of such data collection methods that would require cumbersome representation of numeric data. To this end, the use of survey questionnaire is proposed as the data collection method for the quantitative research
The root means square error and the mean absolute percentage error will be the most method to be sued to compare and rank the forecast method. From the ranking of the forecast method, the study indicates that the regression with econometric variance is the most appropriate method of forecasting the sales of automobile parts
The arrowheads pointing towards the endogenous variables clearly suggest that out of the three exogenous variables, the factor ‘Coworkers’ impose the greatest impact on the dependent variable ‘Job Satisfaction’, while the least effect is bestowed by the factor ‘Supervision’. The numerical values of these impacts are the result of a regression model
The researcher states that in the most basic example, calculating for the mean without making special provisions for missing values (such as using a spreadsheet function that discounts missing values or sorting the data column and running a calculation only on the non-zero cells) will yield an average that is lower than it should be.
Respondents evaluated this item from 1, 2, 3, 4 or 5 which in ascending order signifies the degree of occurrence such as never, seldom, sometimes, often and always respectively. Those respondents who constantly hang out and stay socially close with their families are most likely to rate a high rating on this item.
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The author of the paper states that the procedure is utilized to figure out the right result from the exploration issue. This procedure helps specialists to collect the obliged data for the exploration. Research strategy directs the analyst and goes about as the controlling guide for them.
The study conducted by Narayana and Sunil (204) used statistical tools to be able to prove the equivalence of their proposed method to the reported or standard methods already available in the literature.The study that was conducted is a two-sided test, wherein the hypothesis is that the results from the proposed and reported methods are not different.
Decision-making is the core of the business, and correct decisions result in businesses thriving. Marketing decisions in a company are made based on information that is as a result of data interpretation or analysis. Analysis of quantitative data which is mainly measurable is done through several statistical models.
It is in line with this that the American Statistical Association (2004, p. 9) explains that “survey is used most often to describe a method of gathering information from a sample of individuals”. An important aspect of the definition of a survey given above is that surveys make use of information collected from a sample size.
The study is grounded in the supposed suppression of lung cancer by apoptosis that is activated through the intrinsic Bcl-2 pathway, as well as the extrinsic death receptor pathway. The objective of this study was to find out whether there are genetic variants of Bcl-2 that are associated with susceptibility to lung cancer and its prognosis in Chinese men.
The first objective is to evaluate the perception of learners on the quality of the sports services provided at the university sports center. The second aim of the research is to assess the areas that are important among the learners as far as the sports services and the sports center are concerned.
Moreover, various independent and dependent variables can be connected together using descriptive statistics as the starting point. This paper will analyze the utilization of mean as an effective descriptive statistic in a medical health research conducted to measure the effectiveness of seven different health plans across the United States.
Predicted values of y given the regression equation y= 9.4349+0.095235x, replacing values for x and solving for y we get the predicted values of y to be. Heteros dacoity is a problem since there is a wider variability between the two variables in the scatter diagram. i.e. as the independent variable increases the gap.
Z-Scores provide a direct measurement of size of score relative to other scores of the distribution and relative to mean of the distribution in terms of standard deviation. Z-score can be simply calculated using the formula below. Negative z-scores are below the mean and positive z-scores are above the mean.
Statistics involves collecting data, organizing the data and analysing it to aid its presentation in a meaningful way to provide information about a given phenomenon. Statistics may fall under two main categories namely descriptive or inferential.
The United States Census Bureau provides authoritative information on pertinent geographic and demographic information in the country across different time frames. The site of one of the most reliable sources of information, especially in terms of determining the population of a state, county, or city.
According to the discussion, The Company ABC, in studying the past performance, the assignment compares the past quarterly sales through statistical parameters such as mean, median, quartiles, and bar chart. The future quarterly sales are predicted using regression analysis and moving average method.
This paper concentrates on the analysis of the population size, composition, and growth rate, nations undertook a census every ten years to determine the population size for policy making purposes. It is also important in that it helps determine the dependency ratio. High population growth rate is usually a problem especially with limited resources in...
Since the customer’s claim that an ounce is less than 16. The tail of this test is left sided. With a critical value of 0.05, the z-table shows a reading of -1.645 (99.95%). If the z- test statistic falls on the left side of -1.645, then the null hypothesis is rejected, and the alternative is accepted instead.
This paper gives information that this working group submitted a memorandum on 27th May 1994 to the director, NIOSH which clearly concludes that an in-depth review of scientific literature related back belts, on evaluating the adequacy of data in support of the use of back belts in preventing work-related injuries was insufficient.
Statistical assumptions are an important aspect of empirical studies. This study, just like any other study, applies some statistical assumptions in order to achieve the desired results. The statistical assumptions are: The mean difference is zero; The data is normally distributed; The variance of the two variables are equal.
Researchers use different techniques to address the issues related to the extraneous variables such as standardization that is mostly used in survey analysis. Researchers also ensure those extraneous variables are kept the same for all the research parts. It also requires the researchers to be aware of the extraneous variable.
The author refers to the Seasonal Decomposition output in the BUS 305 Midterm Exhibits file. This output was created for a quarterly time series of production values. The actual value for observation 6 was 254.7. Calculate the deseasonalized value for observation 6 (round the final answer to two decimal places).
Since customers are the most precious asset for an organization, every company looks for the strategic schemes to capture the attention of the old customers on the one hand, and explore the new ones on the other. The model turns out to be extremely beneficial in respect of analyzing the corporate state of affairs and taking decisions subsequently.
The author found that the 90% confidence interval for the variance and standard deviation of seniors at Oak Park College if a sample of 24 students has a standard deviation of 2.4 years and the variable is normally distributed. The estimate is within 0.05 of the true proportion of women over age 55 who are widows.
The author states that statistics is a wide field of study, probably one of the broadest disciplines available, with a plethora of applications too. The topic of ‘Fields of Application of Statistics’ is a rich topic in itself and one that sparks a lot of interest both to scholars and professions globally.
Rumsey, D., 2005. Statistics workbook for dummies : [practice on hundreds of beginning-to-intermediate statistics problems ; review key statistics concepts ; get complete answer explanations for all problems].
The median is particularly useful when in a distribution there are a few data points that are vastly different. For example, in calculating the central measure of the salary obtained by a group of graduates, it may happen that a couple of students have
George has to decide between the possibilities of High, Medium, and Low sales of the grandstand seats to the concert as the 20000 standing area tickets are guaranteed to be sold. This choice will affect some shirts to order to meet the demand. Between the three order sizes, George has to make the order size to meet the anticipated attendance.
Statistics provides a clear advantage in conducting the research and deal with day to day business problems in more objective as well as rational manner. Business use of statistics, therefore, is in many departments including the operations, finance as well as marketing and human resource of the firm.
In regard to the ways of minimizing mistakes in research, the following strengths and weaknesses can be deducted. First, building a rapport with the respondent makes he/she feel freer to give honest answers. He/she may even give answers to sensitive questions. However, some respondents may be unresponsive irrespective of the rapport.
According to the report SR are designed to provide a comprehensive summation of the available evidence for decision makers. It is seen as a way to encourage the use of research evidence in clinical decision-making. Statistical methods (Meta-analysis) may or may not be used to analyze and summarize the results of the included studies.
The paper contain the question one to question fourteen where question thirteen and fourteen the collected exchange rates will be analyzed through graphs and variance analysis. If this rates fits regression models well, then selected will include only those explanatory variables that give details a significant degree of the variance.
Models and forecast based on statistical data from a probabilistic proposition which is tangible and which spells out the chance of the organization/business performing better than it currently does. It is easier to apply statistics and make decisions that are satisfying and which fit different scenarios and situations.
The experiment is designed to evaluate the capability of the test subject to recognize two comparable products. The name of the test subject in this experiment is Lavender and the two similar products tested and chosen by the test subject are Diet Coke and Coke, both from the Coca-Cola Company.
Distortion of statistical data and handling for a particular purpose that can be defined as fraud in some situations is perpetrated by people who are not statistics professional. Often, it is common for statistical information presented in magazine and newspaper to be exaggerated due to the sensational nature of these media.
The analysis starts with the formation of a hypothesis which is either rejected or not rejected after the calculations. The two tests are almost similar and one can be used in place of another. In this case study I am going to write about the application of the use of of z-test and t-test in comparing two means.
Survey shows that more moms are now reading nutritional labels, which is an indication that more of them are becoming more particular of the kind of food they serve their families. More mothers are also avoiding high fructose corn syrup, artificial dyes, sugar and other additives which are blamed for the rise in obesity among children.