what tells us if the variance for groups is similar enough to run through anova

Q: How did we use Cochran's Theorem to develop inference procedures for variances? What kind of data…

A: Cochran's theorem is used to establish the results which is relating to the probability…

Q: Give two ways to compute the variance of a continuous random variable.

A: 1.Using expectation formula i.e.      here E(X) of a continuous variable X  can be calculated as…

Q: How can we know if the inclusion of some independent variables contributes to the explanation of the…

A: Regression Analysis is the mathematical linear relationship between dependent variables and one or…

Q: Explain the assumption of homogeneity of variance?

A: Independent Two Samples t-test: Suppose there are two populations independent of one another. A…

Q: 6) In a one-way analysis of variance design, there is a single factor of interest but there may be…

A:

Q: If y = {12, 3, 6, 6, 19, 5, 7, 2, 4, 6} is a population of scores then: The variance =…

A: From the provided information,The data values are as follow:y = {12, 3, 6, 6, 19, 5, 7, 2, 4, 6}n =…

Q: Question 18

A: The independent t-test assumes the variances of the two groups we are measuring are equal in the…

Q: An analysis of variance produces SSbetween=30,SSwithin= 60, and an F-ratio with df= 2,15.. For this…

A: It is given that, SSbetween is 30 and SSwithin is 60.

Q: The analysis of variance methodology will show that there really is a difference between the means…

A: When the between-group variance is significantly larger than the within-group variance, then there…

Q: An analysis of variance produces SStotal = 100 and SSwithin treatments=40. For this analysis, what…

A: The question is about ANOVA Given : SSTotal = 100 SSwithin treatments = 40   To find : Value of…

Q: To obtain a maximum amount of variance, an item ought to have a degree of difficulty of what?

A: To obtain a maximum amount of variance an item ought to have a degree of difficulty is the number of…

Q: Show that if a one-way analysis of variance is performed on the ranks of the observations instead of…

A: Ranking the Data-  In the Kruskal-Wallis test, the original data is ranked across all groups. Each…

Q: Find the variance of the weight of all the beans in a box. Please provide where did you get the…

A: Farmula used V(nY)=n2V(Y)

Q: When conducting a t-test for independent samples we have 2 ways of computing the variance. One way…

A: Let X and Y are two different samples. The sample size of X data is n1 with sample mean (x̄) and the…

Q: A researcher believes that men and women perceive their own work life balance differently because of…

A: Given: For man: n1 = 10 X1 = 5.7 s12 = 1.79 n2 = 10 X2 = 3.9 s22 = 4.54 Formula  Used:…

Q: Some transportation experts claim that it is the variability of speeds, rather than the level of…

A: Given that, some transportation experts claim that it is the variability of speeds, rather than the…

Q: For tests of Homogeneity of Variance the preferred outcome is to reject the Null hypothesis. True…

A:

Q: Provide an example of a random variable with variance of 0

A: Given that We have provide example of random variable with variance of 0

Q: One major assumption with independent t tests is called “homogeneity of variances.” Describe this…

A: Independent Two Samples t-test:Suppose there are two populations independent of one another. A…

Q: An alternative hypothesis must include the anticipated direction of variance. True  False

A: We have given statement  "An alternative hypothesis must include the anticipated direction of…

Q: What is the variance of this set: {x, x+1, x+5, x+2}

A:

Q: Suppose that we draw a sample of size 49 from a population which has an incomplete gamma…

A: From the given information, Consider, X is the random variable that has incomplete gamma…

Q: Last school year, the student body of a local university consisted of 35% freshmen, 25 % sophomores.…

A: Claim : significant change in % of students for each classification for this year as compared to…

Q: If two distinct values of the variate are given when is the covariance or coefficient of correlation…

A:

Q: What is an example of a research hypothesis for a one-tailed t-test for the correlation coefficient?

A:

Q: If the F-statistic is large, then they variance ___ is much larger than the variance ___.

A: We have given that,  If the F-statistic is large, then they variance ___ is much larger than the…

Q: What's the variance i dont under stand

A: Given information X~Bin(n,p) q=1-p Mean=np and Variance=np(1-p)

Q: order to ensure that there is not a large disparity in the quality of education at various schools…

A: Given Alpha=0.05 n=27 Mean=189.720 Standard deviation=2.230

Q: what happens to the F-statistic if two variances are different?

A: The two variances are different hence the F-statistic are as follows,

Q: When a random variable X follows binomial distribution, the probability of success on one trian…

A: Answer: From the given data, number of trials is equal to = n = 125 The probability of success on…

Q: Is it possible for a variance to be negative? (yes or no) Under what conditions does the variance…

A: Introduction: For a population with N observations, x1, x2, ..., xN, the population variance is:…

Q: if variances are unequal, which would be an alternate non-parametric test for the independent…

A: When the variances are unequal, Mann-Whitney U Test would be an alternate non-parametric test for…

Q: an operation manager at an electronic company wants to test their amplifiers. the design engineer…

A:

Q: The aim of a study is to test the ratio of variances in the weight of two groups of rats being under…

A:

Q: What is the Weakness of Variance?

A: Solution: The major weakness of variance is given