Mathematics and Statistics : Statistics

LEARNING OUTCOMES BEING ASSESSED: •    Choose between statistical techniques, interpret and evaluate the validity of work based on appropriate techniques. •    Interpret the results of statistical analysis. •    Constructing survey questionnaires for research purposes Topic: COVID-19 effects on the environment Task#1 Hypothesis Statement Using your research findings write an introduction about the topic, and state your hypothesis for this study. You should use your research results as a base of your hypothesis. •    Introduction of the topic of research •   …

American Statistical Association (ASA). (2018). Ethical Guidelines for Statistical Practice. Available at: https://www.amstat.org/ASA/Your-Career/Ethical-Guidelines-for-Statistical-Practice.aspx Rubin, D.B. (2002). The ethics of consulting for the tobacco industry. Statistical Methods in Medical Research, 11, 373-380. *Readings and other resources are available through the Resources Link. Activity: Write a two-part reflective post that answers the following questions: Does Rubin’s explanation of his work follow the ethical guidelines set out by the ASA (American Statistical Association)? Which one(s) of the four ethical theories do you think…

Scenario Background: A marketing company based out of New York City is doing well and is looking to expand internationally. The CEO and VP of Operations decide to enlist the help of a consulting firm that you work for, to help collect data and analyze market trends. You work for Mercer Human Resources. The Mercer Human Resource Consulting website lists prices of certain items in selected cities around the world. They also report an overall cost-of-living index for each city…

p-Hacking p-hacking is innocently or deliberating manipulating research to get a statistically significant  p-value. In this way researchers can get published, but this also creates a high percentage of false studies. As we learned in class, the p-value is the conditional probability of getting data at least as extreme as what was observed GIVEN the Null Hypothesis is true. Many people incorrectly interpret a low p-value to mean there is a high probability that the claim they desire to publish…

For this assignment, you read the article written by Buzi, Smith, and Weinman (2014) located under your weekly resources. These authors used a chi-square analysis to analyze the data from their research study.  Now, write a summary of the research, including background information on the topic, the main hypotheses, methods, results, and the conclusions drawn by the researchers. In addition to this summary, be sure to address the following in your paper: Describe the variables used in the analysis, along…

Read Science isn’t broken (Links to an external site.) (Aschwanden, 2015) (Links to an external site.) using the previewing and skimming strategy outlined below. Discuss what you learn from the article, with a focus on what you notice about your own thinking when playing with the “Hack Your Way To Scientific Glory” interactive. Make sure you paraphrase appropriately and add the reference for the article. Instead of reading from beginning to end try previewing and then skimming to be faster:…

This week, you have learned about t-tests and ANOVA and will apply what you have learned in the evaluation of several research scenarios. For this task, you will read each research scenario and answer the questions regarding each one. Research Scenario 1 A researcher is interested in the effects of a new weight loss supplement. Participants in this double-blind study are randomly assigned to either a group that receives the new supplement or a group that receives a placebo. Participants…

This week, you have read about hypothesis testing and will now apply this knowledge by writing a paper that addresses the following: Provide an example of a hypothesis where a one-tailed hypothesis test would be used. Provide an example of a hypothesis where a two-tailed hypothesis test would be used. If a researcher has set alpha at 0.05 for a two-tailed hypothesis test, what is the p-value required to reject the null hypothesis? A researcher has set alpha at 0.05.…

For the following terms associated with sample surveys, give an explanation of what each term means and an example of its occurrence or use in any sample survey of your choice. (a) Sampling frame (b) Systematic sampling (c) Stratified sampling (d) Non-response error (e) Random sample (f) Multi-stage sampling

This week, you will read Americans Remain Relatively Optimistic about Job Market, located under your weekly resources. In this news article, a population mean was estimated from a sample. The margin of error has also been reported for the 95% confidence interval. For this task, you will summarize the news article, and then provide a description of the results, including the margin of error. You should also include an interpretation of the margin of error; in other words, what is…