Instrumentation , Sampling , Statistical terms and tests: 1) Explain your understanding on the key elements as presented in Figure 1 2) When developing a questionnaire , identify the possible bias that will lead for the occurrence of unethical issues in terms of : -Researcher -Respondent -Measurement 3) Identify the sources of error in the questionnaire development

Instrumentation , Sampling , Statistical terms and tests: 1) Explain your understanding on the key elements as presented in Figure 1 2) When developing a questionnaire , identify the possible bias that will lead for the occurrence of unethical issues in terms of : -Researcher -Respondent -Measurement 3) Identify the sources of error in the questionnaire development

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Part I -Explain in your own words the purpose of calculating measures of central tendency for a data set. Provide one (1) example. Part II- Explains the concept of bias, related to the mean, mode, and median. Part III-If you were allowed to choose between the mean, the median, or the mode to calculate the measures to make a decision on a data set, which of the three measures would you use and why? Part IV-Using the data below, compute the mean, mode, and median: 67, 98, 87, 95, 93, 88, 90, 62, 71, 99. Part v-Find the first and third quartiles for a week's temperatures from last year's summer, expressed in degrees Fahrenheit: 82, 90, 93, 88, 91, 96, 87. Part VI-Below is a table of frequencies. Find the mean, mode, and median. Frequency Limits (f) 110-115 15 116-121 22 122-127 19 128-133 20 134-139 9 140-145 21 146-151 11 Part VII- Below are the weight (pounds) data for a group of babies born at Auxilio Mutuo Hospital last month: 5.8, 7.5, 8.0, 6.0, 7.3, 8.1, 6.4, 7.3, 7.2, 6.1, 5.8,…
Does the sample size ? affect the mean of all possible sample means? Explain your answer.
What are some common types of biases that can affect statistical analysis, and how can they be addressed?
4. Describe the process of statistical inference.
what kind of ethical issues may potentially arise when analyzing and reporting statistical data?
5. Websites like e-rewards give airline miles or other awards to members who fill out surveys online. Members must be invited by a company such as an airline to participate and once they are a member, they will receive invitations for surveys based on qualification criteria. Discuss an advantage and a disadvantages of this data collection method. Briefly explain your choice. Advantage: Disadvantage:
c) Comparison between the number of persons who have or do not have a disease of the circulatory system and their diet classified into one of three categories: vegetarian, mixed meat and vegetables and most meat. what statistical test method can be used for the above situation
"Which of the following best describes a sample in statistics? A) The entire group of individuals or instances about whom we hope to learn B) A subset of the population used to represent the entire group C) The variable being measured in a study D) The procedure used to collect data"
which statistical analysis correctly analyzes the repeated measures (also known as within subjects) design?
What can researchers do to ensure their survey is valid? Why is this important? What are the different types of validity that should be considered? What other concerns may affect validity of the survey?
What is sampling? In the study you are analyzing, what conceptual issue of major concern would you consider in sample data collected from the field and how does this concern affect the validity of results obtained from any research? (i) How has the authors in this study accounted for this concern?