The dependent is variance inflation factor, make a decision whether it need to drop any variables.

Q: Explain how the F-test statistics is calculated and what it tells us about the variance between and…

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

Q: One way analysis of variance is used to test for

A: One way analysis of variance also known as 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: what is variance? How do you calculate variance?

A: Variance:Variance is the average of squared difference of sample points from their mean. It is a…

Q: Given this already solved problem, how could you determine whether homogeneity of variance is…

A: The hypothesis for the homogenity of variances is H0 : σ12=σ22       againstH1 : σ12≠σ22 Adding the…

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: The 20 subject using data set ate a human brain size in appendix B have weights with a standard…

A:

Q: What are the possible values of the linear correlation coefficient?

A: The correlation coefficient measures the linear relationship between two quantitative variables.

Q: The two types of variance that can occur in our data are A. Independent and dependent

A: Hello! As you have posted 2 different questions, we are answering the first question. In case you…

Q: What are the 2 variables being correlated (or assumed correlated) in the Hypothesis Statement?

A: We want to tell the hypothesis of correlation whether they accept or reject.

Q: e added to reduce the error variance

A: Dependent Variable Independent variable wage experience The parabolic regression model will be…

Q: William Adams wants to test whether the mean monthly returns over the last five years are the same…

A: Hypothesis Test: A Hypothesis test is an assertion or statement about the population parameter. The…

Q: how do you find the variance

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

Q: If an item is administered to 100 individuals has a difficulty index of 0.20, this item has a…

A: The number of people to whom the item is administered = 100 that is n = 100 The difficulty index is…

Q: What is the variance of number of Sundays on a nonleap year?

A:

Q: What is formula for variance for sample?

A: Variance measures absolute variability in a data set, calculated with respect to the mean. That is,…

Q: how to find the variance?

A: Variance is a measure of variability. It is computed by the average of squared deviations from the…

Q: The estimated error variance will be

A: Given that SS(error) = 84.35 Df(total) = 15 Number of levels k = 4

Q: What does this information tell you about the variability of the student's performance on the…

A: Given The data is as follows:

Q: What happens to ordinary least squares estimators if their variances of the residual not constant?

A: Given information: The regression output is given.

Q: In 2014, the variance of the scores in the National Achievement Test for science was 9.61. A sample…

A:

Q: If the population variance of the lifetime of a light bulb is 10000 hours, how large of a sample…

A: Given: The population variance of the lifetime of a light bulb is 10000 hours, and a sample must be…

Q: What is the variance of X

A: here given continuous probability density function  c(1- x2)           -1 ≤x ≤ 10…

Q: what does variance measure?

A: Variance: Variance measures absolute variability in a data set, calculated with respect to the mean.…

Q: What is variance?

A: Variance is a measure of dispersion or spread of a data distribution. Variance of a data…

Q: Before using these variance estimates, what must we calculate?

A: Before using any variance estimate we should check whether it is biased or unbiased and calculate…

Q: The probability that the average time of the sample does not exceed 168 minutes. b) The probability…

A: Given that  μ= 165 , σ2=144 ) μ= 165 , σ=√144=12  n=210 Formula for Z-score Z=(X-μ)/σ

Q: Give examples of at least two pairs of data that will most likely yield different variance and…

A: The answer to the above question is as follows :

Q: what test is used to determine whether two population means are different when the variance are…

A: The test that is used to determine if the two population means are different when the population…

Q: find out Microsoft’s alpha, beta, and the fraction of its variance attributed to market risk.

A: To find the required alpha and beta values, we need to fit a regression model between Microsoft's…

Q: The second sheet of the spreadsheet linked above contains the scores of 50 students on 4 different…

A: Given: Student Exam 1 Exam 2 Exam 3 Exam 4 46 96 83 36 83

Q: What is the Weakness of Variance?

A: Solution: The major weakness of variance is given

Q: Analysis of Variance can also be called as F-test. true or false?

A: As we know that analysis of variance which is ANOVA . In this we can calculate F - value which is…

Q: The accounting department analyzes the variance of the weekly unit costs reported by two production…

A:

Q: A correlation of +.20 means that [blank] of the variance in the outcome variable is accounted for by…

A: Solution: From the given information, r=0.20.

Q: If the variance of all newly-born babies are 1.25 pounds, can we say that newly-born baby boys are…

A:

Q: We have to compare the result of all variables using range,interquatile range,variance and standard…

A: As asked, for the given data we have to compare the result of all variables using the range,…

Q: Give one method to increase statistical power and Which test statistic should you use if you are…

A: Given problem Given that   Method to increase the statistical power : a) Increase the sample size…

Q: Suppose that a journal article reports that the mean age at marriage of Filipino women is 22.6 years…

A: Given Data : For Sample 1 x̄1 = 22.6 σ1 = √7.2 = 2.6833 n1 = 150 For…

Q: How do I get the variance ?

A: The probability distribution is: x p(x) 1 0.05 2 0.1 3 0.12 4 0.3 5 0.3 6 0.11 7…

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 whether homogeneity of variance is satisfied for this analysis, and be clear on how you…

A: Homogeneity of Variance: Homogeneity of variance (homoscedasticity) is a crucial assumption shared…

Q: If I was calculating the variance of this list of numbers (attached), do I need to include the "no…

A: Here, there are 14 observations and no home games indicate the value “0”.

Q: How to get rid of co-variances double head arrows among the demographic variables in semplot…

A: R- lavaan is an open-source package in R programming for latent variable modelling.

Q: Once the correlation coefficient is known, how can we find the amount of the shared variance?

A: Concept:  correlation coefficient measures the degree of linear relationship between two variables.

Q: If the probability of hitting an object is 0.8, what would the variance be?

A: Given problem Given that   If the probability of hitting an object is 0.8, what would the variance…

Q: the homogeneity of variances assumption states that the variance in the two samples must be equal?…

A: Homogeneity of variances always make about the population variance not about sample.

Q: how do I find the variance?

A: Population variance is the measure of variability of the data that is how far away our data points…