Describe the circumstances in which post hoc tests are used and explain why these tests are necessary.

Q: How to Converting to z Scores is done?

A:

Q: Why would we want to use three separate tests instead of ANOVA?

A: Why would we want to use three separate tests instead of ANOVA?

Q: What is hypothesis testing?

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

Q: Can you give an example of how the importance of the goodness of fit test to the chi-square test?

A: Step 1: The goodness of fit test to the chi-square test is a statistical hypothesis, which helps to…

Q: What does the test-retest method of reliability determine? Provide an example from counseling…

A: Here's the explanation is as follows; Reliability , it is the degree of consistency of a measure.…

Q: What are test specificity and test sensitivity?

A: Specificity and sensitivity are two statistical measures to determine the efficiency of a binary…

Q: What happens to the power of a hypothesis test if the sample size is increased without changing the…

A: For a fixed significance level, increasing the sample size increase the power of a hypothesis test.…

Q: Briefly explain when a one-way ANOVA procedure is used to make a test of hypothesis?

A: One-Way ANOVA is used to compares the means of two or more independent groups in order to determine…

Q: Describe the circumstances in which post hoc tests are used, and explain why these tests are…

A: When we are conducting an ANOVA test, to test whether the means of more than 2 groups are different…

Q: A significance level for a hypothesis test is given as ∝ = .05. Interpret this value

A:

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 are the three t tests for population means?

A:

Q: You have been asked to develop a work sample for a receptionist position in a three-person law firm.…

A: The topic is part of descriptive technical writing.

Q: Why is pretesting a crucial step in survey design?

A: Here we want to know pretesting a crucial step in survey design.

Q: In your opinion, how important is hypothesis testing in research

A: Hypothesis :  Some statement about the population  , which is have to verify by using sample…

Q: What is an example of criterion validity?

A: Criterion validity  To evaluate criterion validity ytou calculate the correlation between the…

Q: What are various t-tests?

A:

Q: Describe the assumptions for ANOVA and explain how they may be diagnosed.

A: Introduction :-  There are some assumptions made to conduct ANOVA. We have to describe them and to…

Q: what are the first, second, and third quartiles?

A: 25) Here , we want to find the first , second and third quartile For that we use the R-software or…

Q: Interpret the test hypothesis either reject or not. And, how about the significant level?

A: Answer: From the given output, Test statistic = 2329.367 P-value = 0.0000 As p-value < 0.05, we…

Q: Which of the following accurately describes the purpose of post hoc tests? *

A: Post-hoc tests are used when the null hypothesis in ANOVA ia rejected.  Note : Since you have asked…

Q: What are two reasons that some people in the field believe significance testing should be banned?…

A: Here we want to discuss reasons that some people in the field believe significance testing should be…

Q: ) What are the requirements for a one-way ANOVA test? b)Why are the advantages for these tests?…

A: Requirements to perform One way ANOVA- There must be k random samples, one from every populations.…

Q: Explain in details ANOVA and its types?

A: ANOVA helps to determine if the differences between groups of data are statistically significant or…

Q: What is the explanatory variable? Is it categorical or quantitative ?

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

Q: What is the formula for statistical power and Type 11 error

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Q: Discuss all possible factors that would affect the validity of test scores

A: A test score is the value of the test statistic when the values of the parameter are put.

Q: If a male receives a positive pregnancy test, is this type I or type II error?

A: We know that; Type-I Error is rejection of the null hypothesis when it is really true. Type-II Error…

Q: How to compress the word “access” using the statistical method?

A: The word 'access' in statistics actually mean Data Access. That is, this is a tool by which any user…

Q: explain why two parameters are used in a two sample test

A: Here in the two parameters we take in two sample t-test because, we take samples from two…

Q: What does hypothesis test indicates?

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

Q: Please help find the test statistic, the p-value of the test, if we reject the null, and if there is…

A: Solution: State the hypotheses Null hypothesis: That is, the rate of inaccurate orders is equal to…

Q: What is the difference between experiment and testing?

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

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: 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 Type I and Type II Error?

A:

Q: Evaluate the effectiveness of alternative screening tests when given appropriate information.

A: given A screening test is a type of test or procedure that is used to identify those who are likely…

Q: Explain how sample size can influence the outcome of a hypothesis test.

A: Lets take the example that we are doing Hypothesis test for one mean with sample size n : When the…

Q: What is trignomentry ?

A:

Q: Summarize the similarities and differences between the one-sample t test, independent-measures t…

A: One-sample t-test : It is used to compare a single population to a standard value.For example, to…

Q: Explain the difference between a one-tailed and two-tailed significance test. When is it appropriate…

A: A significance hypothesis test is a very important part in statistics.

Q: Describe the step-by step procedure for statistical testing

A: Hypothesis testing : A statistical hypothesis is a hypothesis that can be tested based on observed…

Q: Why are post hoc tests performed?

A: Analysis of variance test is used to analyse the significant difference among the group means in the…

Q: will you assess the validity of the questionnaire?

A: Validity in the questionnaire represents the amount of built in or systematic error present in the…

Q: What can researchers do to ensure their survey is valid? Why is this important? What are the…

A: Validity means that researcher’s findings truly represent the phenomenon they are claiming to…

Q: Would median and quartiles be the right answer?

A: Measures of center :  A measure of central tendency is a summary statistic that represents the…