What is a Chi-square test of independence? How is it helpful? Why is it used?

Q: Which of these two research objectives may be addressed using Chi-Square test of independence?

A: Chi square test of independence is used to determine whether two variables are dependent or not.

Q: What does eta-squared also called? Describe about it.

A: The measure of effect size in analysis of variance is defined by eta squared.

Q: Regarding the test of significance for the usefulness of the predictor variables  x1, x2, and x3 in…

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Q: What is a type 1 and type 2 error? How are they related to each other?

A: First of all, we know that there are two types of arises in the testing of hypothesis because, in…

Q: when is a dummy variably useful?

A: Dummy variable: This is an artificial variable which indicates more than or equal to two categories…

Q: What will the chi-square value be when there is almost no difference between what is observed and…

A: The chi-square value for i=1 ( 1 ) n is given as :    Chi-Square =  ∑i=1n(iobserved -iexpected…

Q: what is the least squares mean ADG for Hereford

A: Given :We have given the data of angus and Hereford  We first find the  mean for angus and Hereford…

Q: what is the chi-square test and how is it used?

A: Chi square test: A chi-square test is a statistical test used to evaluate found effects with…

Q: Below is a table that a sample of 100 people from a school and what type of car they drive and if…

A: From the given information,   Foreign Domestic Total Student 15 35 50 Staff 25 25 50 Total…

Q: What are the restrictions of use for a Chi-Square analisys?

A: The chi-square is very sensitive to sample size. As the sample size increases, absolute differences…

Q: hat is the possible range of values for Pearson's coefficient of skewness?

A: Here  For Perason coefficient of Skewness

Q: Explain the first step in the F-test is?

A: Hypothesis: Hypothesis is an assumption about the parameter of the population which will be made on…

Q: What is meant by least squares?

A: The method of least squares  is a standard approach in regression analysis to approximate the…

Q: A low power of the test is not caused by...

A: Power of test: This will require some general knowledge of the magnitude of the difference that…

Q: For the chi-square test of independence, how is the p-value evaluated?

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Q: DO THE CHI SQUARED TEST

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Q: What determines whether we use the z-test or the t-test?

A: Z statistic: Z=(X¯-μ)σ/n~N(0,1) with mean=0,variance=1   t statistic t=(X¯-μ)S/n

Q: what are IQR?

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Q: Give the degrees of freedom for the chi-square test based on the two-way table.

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Q: What is the applicability of mathematical foudation of numerical methods?

A: Numerical methods are used to find the solution for the problems and they are comparatively better…

Q: What are fundamental differences between t test, z test and F test?

A: fundamental differences between t test, z test and F test?

Q: What is formul for Tukey’s HSD Test?

A: The Tukey’s honestly significant test (Tukey’s HSD) is a post hoc test which is used to find out…

Q: List one general strength of using nonparametric tests?

A: Nonparametric tests are used when there is no type of distribution given and a relationship or…

Q: You conduct a survey to find out whether one person talking on a cell phone during a romantic date…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: The Chi-square test statistic (rounded off to two decimals) is:

A: Test is that whether the daily breakdown of commuting pattern of workers into the CBS have changed…

Q: we can make a causal claim from the results of the chi-square test

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Q: Explain the purpose of the chi-square test

A: Chi square:   The Chi-Square statistic is used for testing relationships between categorical…

Q: What do you need to make sure a chi-square test is valid in a 2x2 table? Are the rules different…

A: Suppose we have two attributes(i.e some specific numerical characteristics) A (with c number of…

Q: In ANOVA test, MSE equals sum of square for treatments divided by V1. Select one: True False

A:

Q: Explain the Chi – Square test and when it is appropriate.

A: In simple words, You can say Chi-square test is a way to make a decision that something is random or…

Q: What is the power of this test?

A: Let X denote the weights of donuts. Decision rule : Reject the null hypothesis if the donut weights…

Q: What is the chi-square test-statistic for this datas (2 decimals)

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Q: What is the chi-squared value for the test?

A: Our aim is to write the chi square test value from the given output.

Q: Toss two coins together for 100 times, then record the result. Calculate the expected for each…

A: Given two coins are tossed together for 100 times.

Q: Regarding the test of significance for the usefulness of the predictor variables x1, x2, and x3 in…

A: The value of test statistic can be obtained by the formula given below:

Q: For what types of data do we use chi-square tests?

A: Given : Chi-square tests

Q: Suppose that you have created a contingency table comparing the restaurants that students ate at and…

A:

Q: When to use a chi- square test?

A: The chi-square test can be used to test the in the following scenarios: To test the Goodness of fit…

Q: ifferentiation

A:

Q: chi-square test

A: The chi-square independence test is a procedure for testing if two categorical variables are related…

Q: What is Non-Parametric test in statistics?

A: In statistics, nonparametric tests are methods of statistical analysis that do not require a…

Q: The phi-coefficient can be used to measure effect size for a Chi-Square for Independence if each of…

A: In the chi-square tests for independence, a sample chi-square can be used to find out the number…

Q: What do all three types of t-test have in common

A: What do all three types of t-test have in common

Q: If a chi-square test of Independence ends in a non-significant result it means that the variables…

A: The hypotheses for the chi-square test of Independence are, Null hypothesis: H0: The two variables…

Q: For what purpose is a chi-square homogeneity test used?

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Q: For the chi-square test of independence, Provide a hypothetical formulation of test of independence.

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Q: What is sigma notation?

A: Sigma notation

Q: A researcher wants to test the association between 4 stress levels and 8 choices of favorite color…

A: According to the provided data, the researcher wants to test the association between 4 stress levels…