The variance statistic is an unbiased estimator of the population variance.

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

A: One way analysis of variance also known as ANOVA.

Q: assumptions are required to perform an analysis of variance.

A: What is Analysis of Variance (ANOVA)? Analysis of variance (ANOVA) is an analysis tool used in…

Q: Could you explain the difference of homogeneity of variance and heterogeneity of variance?

A: Given that  We have to explain  the difference of homogeneity of variance and heterogeneity of…

Q: A researcher believes that the mean earnings of top-paid actors, athletes and musicians are the…

A: Given data Actor Athlete Musician 32 48 37 27 53 43 31 43 42 28 38 38 22 47 25 32 42…

Q: The number of people in a car that crosses a certain bridge is a random variable x. The toll on the…

A: Let us denote: X= number of persons  Y= amount of money collected The fixed charge is $2. And per…

Q: Explain the role of critical difference in Analysis of variance..

A: Explain the role of critical difference in Analysis of variance.?

Q: The Analysis of Variance (ANOVA) is used to determine if there is a difference between a selected…

A: ANOVA, the analysis of variance is the technique used to check if there is significant difference…

Q: Find the standard error,  t statics Sample variance = .67 Sample size = 30 Population  size = 60…

A: Given information- Sample variance, s2 = .67 So, sample standard deviation, s = 0.819 Sample size, n…

Q: In ANOVA, the variance for the effect is termed a Mean Square between because mathematically we…

A: Given information : In ANOVA, the variance for the effect is termed a Mean Square between because…

Q: Why roles are reserved for the variance and particularly for its square root, the standard…

A: Variance and standard deviation: Variance measures absolute variability in a data set, calculated…

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: A study’s ability to reveal a statistically significant difference between the levels of an…

A: The power of any test of statistical significance, it is defined as the probability, it will reject…

Q: Show that X is a sufficient estimator of the mean u of a normal population with the known variance…

A: X~N(μ,σ2)

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: A value of r2=.09 is considered what for the effect size test of the percentage of variance…

A: Given, r2=0.09

Q: Assess the importance of fixed and random effects.

A: Fixed effects A fixed-effects model supports prediction about only the levels and categories of…

Q: What is the expression for PROPORTION OF EXPLAINED VARIANCE, η2 (ONE-FACTOR ANOVA)?

A: The proportion of explained variance is known as the coefficient of determination. It is the ratio…

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: The variance in a production process is an important measure of the quality of the process. A large…

A: Given: n1 = 25 n2 = 22 α = 0.05 Formula Used: Test-statistic F = s12s22

Q: Give 2 examples of Variance and standard deviation for grouped data to coefficient of skewness and…

A:

Q: A test has an estimated reliability of 0.60 and a validity coefficient of 0.50. In term of…

A: To find the percentage of non-pertinent variance, we first need to understand the concepts of…

Q: What is the quare root of variance?

A: Given : Variance (σ2) is given

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: A survey was conducted to compare the mean cost of a meal at fast food restaurants in two different…

A: From the given information, Lets significance (α) = 0.05. Hypothesis test: Test statistics:

Q: expected variation among observations

A: Bias is defined as E(T-θ)2=Var(T)    .........(1)where T=(X1,X2,....Xn)θ=is true Parameter   If θ=0…

Q: at is the assumption of homogeneity of variance? Select all tha The standard deviations for the two…

A: The assumption that two populations have the same variances is called the assumption of the…

Q: ? Estimates of variance can be used to test a hypothesis because?

A: These estimates are formulated to interpret the means and also to discuss whether the sample means,…