Explain the purpose of the chi-square test

Q: What is a Z score and why is it useful?

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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: This is an EXERCISE. How can we measure the impact of education level on income inequality by using…

A: Yes, the Chi Square test of Independence can be used to test dependency between education level and…

Q: What information is provided by calculations of the “chi-square” test statistic?

A: The chi-square test statistics, it could be calculated:

Q: Medical researchers want to test the theory that the viral load of Covid-19 in children is different…

A: In this problem, Medical researcher wants to test the viral load of COVID-19 is children is…

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: Explain the differences between a One-Way and a Two-Way Chi-Square Test. Which of these do you think…

A: One Way Chi-Square Test is used to test the general goodness of fit of the data i.e., it checks if…

Q: how do you find the variance

A: Variance:Variance indicates by how much each observation differs from a central point represented by…

Q: Explain with example (i) weighted mean (ii) grand mean (iii) harmonic mean

A: Note: Hi there! Thank you for posting the question. As there are several independent questions,…

Q: What does the one-sample chi-square test determine?

A: The Chi-square test used with one sample is described as a "goodness of fit" test

Q: DO THE CHI SQUARED TEST

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Q: What is the advantage of using piecewise interpolation than using Lagrange interpolation?

A: Piecewise linear interpolation is second-order accurate. The Lagrange interpolation formula is a…

Q: Describe about mean square between.

A: In ANOVA, “SS” stands for “sum of squares”, “df” stands for degrees of freedom, F is for the test…

Q: Suppos What is oximation

A: Given: suppose  a Taylor polynomial approximate sin (1) to within 10-6. To find: the Taylor…

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: How to find the variance, explain the formula

A: Mean:Mean is a measure of center in case of quantitative data. Mean of a data set is the sum of the…

Q: How to calculate Z score

A: Z-score of a sample indicates how far an element is from the mean in terms of standard deviation.…

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: What is the formula for converting z score to original score?

A: Solution: Let X be the random variable. Suppose X has a mean µ and standard deviation σ. Then, the z…

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: How many test rides are being examined in this Chi-squared test?

A: Given:   Sunny Cloudy Rainy Purchase made 6 4 0 Purchase NOT made 0 4 6

Q: What is Mean Square?

A: Mean square (within) represents the estimate of the population variance. Both mean square and…

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: List two limitations of a chi-square statistic.

A: Chi square statistic: A chi-square statistic is used to show the relationship between two…

Q: Describe how to Convert to Transform Standard Scores?

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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

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Q: calculate Pearson's Index of Skewness

A: Pearson index of skewness is a method to calculate the skewness of the data. Skewness is the…

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: Where does the Tukey’s HSD test can be used?

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Q: Explain why the Chi-square test is particularly well-suited to social work research.

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Q: The data for a chi-square test consist of numerical scores non-numerical categories ranks…

A: The data for a chi-square test consist of frequencies. It is commonly used for testing relationships…

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: 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…

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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: chi-square test

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

Q: Describe about Tukey’s HSD Test.

A: Tukey's HSD test also called as Tukey's honest significance test is basically a statistical test to…

Q: How can the Mean Value Theorem be used?

A: The Mean Value Theorem states that if a function f is continuous on a closed interval [a,b] and…

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

A: The chi-square test of independence is used when there are two categorical variables. It is mainly…

Q: WHAT IS VARIANCE

A: Solution Data given as 83, 85, 85, 85, 85, 85, 85, 85, 85, 85, 86, 86, 86, 86, 86, 86, 86, 87, 87,…

Q: Explain why Rolle'a Theorem is really just an example of the Mean Value Theorem.

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Q: True or false: In order to use chi-square tests, each OBSERVED FREQUENCY must be at least 5

A: In order to use chi-square tests, each Expected FREQUENCY must be at least 5

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

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Q: What does a negative z score mean?

A: In this question we have to tell what does the negative Z score implies. A Z Score means that how…

Q: Why are standard z values so important?

A: The z-score is standard score.