Is the study an experiment or an observational study ? How do you know?

Q: The value of the test statistic is

A:

Q: What is Observational Study?

A: Experimental study: If the researcher influences or controls one of the variables in the study and…

Q: What do think are the advantages and disadvantages of observational and experimental studies?

A:

Q: Compare the advantages and disadvantages of door to door personal interviews with mall intercept…

A: Advantages and disadvantages of door to door personal interviews: The door to door personal…

Q: What do you think are the advantages and disadvantages of observational and experimental studies

A:

Q: What does a z-score tell you about a data value?

A: Solution: Let X be the random variable. The z-score is the standardized value of the given data.

Q: Why should I learn statistics?

A: Statistics helps us to describe and organize data. It also helps us to make inferences from data.

Q: What is discriminatory ability or power in statistics and how can you show it on course assessments?

A: Please find the explanation below. Thank you

Q: What are the conclusions of the study?

A: Parametric test is used to determine the mean significance between the sample and population when…

Q: You wanted to see if there are differences in the sleeping patterns between males and females when…

A: An observational study is a method in which you simply observe the responder without providing them…

Q: Briefly explain why you should use the ANOVA rather than other tests we studied to determine if the…

A: If there is more than 2 conditions in an experiment a ANOVA is required. The fact the ANOVA can test…

Q: What should I learn statistics?

A: Given problem Given that   What should I learn statistics?

Q: Do sports drinks help prevent cramps in endurance sports? At the end of a marathon, officials will…

A: Observational study: In observational study, the individuals of the study are observed by the…

Q: What is descriptive statistics? What information does it provide? Why is it important?

A: Descriptive statistics: Descriptive statistics is a branch of statistics that deals with the…

Q: What is statistics and why do you need to use statistics in your research? How important are they?

A: Statistics: Statistics is the branch of mathematics that deals with the collection of data,…

Q: What type of test would you use to determine if happiness and health are related?

A: Test is that whether happiness and health are related.

Q: Does correlation imply causation? Why or why not?

A: Correlation indicates degree to which two variables are linearly related.

Q: What statistic would you use if you had one independent variable ‘geographic location’ (North,…

A: Given information: One independent variable is ‘geographic location’ (North, South, East, West). One…

Q: Why inferential statistic is important for physical activity educators ? Please provide two examples…

A: 1] Inferential statistics is used to make the generalization about the population based on the…

Q: Explain the tests of statistical significance?

A: It is asked to explain the tests of statistical significance.

Q: Using the table, How would you write the results for the statistically significant improvements in…

A: Here, we have a data related to 30 individuals.  Studying caregiver's stigma, a few questions have…

Q: What is the goal of statistics?

A: The main purpose of statistics is to understand the data deeply.

Q: If your critical value is ±1.96 and your z-value is -2.44, do you reject that the sample mean…

A: From the given information,   Critical Value: ±1.96 z-value: -2.44

Q: What are application of statistics and math?

A: Statistics help in providing data as well as tools to analyze the data. Some powerful techniques are…

Q: What quantitative research design should be used in "Relationship between Academic Stressors and…

A: Statement is given

Q: Based on the results of data analysis, which group performed better in the achievement test? Why?

A: Measures of central tendency: Mean: It is the overall average of the group. Median: It is the values…

Q: What is the goal of descriptive statistics and how do you think this goal is different from…

A: It is an important part of statistics . It is widely used in applications .

Q: er, which type of statistical test is most appropriate?

A: There are various statistical test that can help in exploring the relationship between two…

Q: What is the point of statistics? Why do we need it? Why can’t we just look at data by itself?

A: Introduction - Statistics - Statistics is a branch of mathematics which include collection,…

Q: why is it  important for students to know something about statistics as applied to psychology?

A: Yes it is important for students to know something about statistics as applied to psychology…

Q: What does hypothesis test indicates?

A: Hypothesis test: The process of making inference regarding the population based on the sample is…

Q: In psychology, what are two factors that decrease statistical power?

A: Factors that affect power are There are 3 factors that affect power are :-• Sample size (n) : -…

Q: Researchers have observed that high school students who watched educational television programs as…

A: Observational study:If the individuals under the study are just observed and measured based on…

Q: What is the difference between experiment and testing?

A: Let EXP denote experimenting. Let TES denote testing.

Q: What is the meaning of this statistics comic?

A: Extrapolation, Randomisation, and Type II error

Q: How do you know which test/procedure to use given a particular research design or study? What…

A: There are various aspects which we have to analyse to decide which test procedure to use. Some of…

Q: A sample survey by Comcast asked a random sample of customers about use of the Internet and about…

A: The test is to check whether there is a relationship between Internet use and community type or not.…

Q: What is experiment?

A: An experiment is any process that can be repeated in which the results are uncertain and an event is…

Q: What test would you use if you want to determine whether gender and major depend upon one another?…

A:

Q: Explain the major difference between an experiment and an observation.

A: In an experiment, the researcher manipulates every aspect for deriving a conclusion. In…

Q: Why is correlation not causation?

A: Correlational research is a kind of research that involves non-experimental research.

Q: Explain two reasons why the research hypothesis is not tested directly.

A: the null hypothesis is a neutral statement about a population parameter that is never proved or…

Q: What is the relationship of population, sampling, sample, and inference in statistics?

A: Statistics is a field of study which involves collecting, arranging, analyzing, and drawing…

Q: Describe about the Why the Research Hypothesis Isn’t Tested Directly.

A: The null hypothesis is a neutral statement about a population parameter that is never proved or…

Q: What is the difference from a controlled variable and the control in a scientific experiment?

A: A control variable is any factor that we control or hold constant during an experiment. Whereas…

Q: What kinds of statistical data play a role in an auto insurance firm’s decision on the annual…

A: Various statistical tools are used by auto insurance companies to find out the amount of premium…