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

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: 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: 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: 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: how to calculate the variance?

A: Given  The data is as follows: Overall mean = 4.07 Variance = 0.00130 SD = 0.1140

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: A population of marine gastropods has shell lengths that are normally distributed with a mean of 7…

A: We have to find given probability.

Q: If the industry has an average cash deposit of 2100, which bank is performing better? Which bank is…

A: For the provided data, the appropriate visual representation is the Line Graph. The distribution of…

Q: True or False In general, a sample with a large variance is more likely to produce a significant…

A: Note that as the variance increases, p-value also tends to increase. To produce a significant…

Q: How do you find the standard error estimate of two disjoint populations, assuming they have the same…

A:

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: Two samples, each with n =5 scores, have a pooled variance of 40. What is the estimated standard…

A: Given: Let the pooled variance be sp2 n1=n2=5   Let the standard error be SE Formula for Standard…

Q: How is the number of degrees of freedom available for estimating , the variance of ε, related to the…

A: Let n be total number of variables       k be number of independent variables

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: 4) Explain why outliers are weighted higher in the Variance equation WIR. n-1 (xi -x)2 Is this a…

A: Outliers are the data points that does not follow the common trend of the data. Data with many…

Q: What is variance?

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

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: For any quantitative population with a finite variance, the proportion of data points less than 2…

A: Given :- For any quantitative population with a finite variance, the proportion of data points less…

Q: If a set of data is normally distributed with a mean of 20 and a variance of 16, a z-score of -3.8…

A: Let raw score is X.  Then Z Score is given by, Z= (X- mu)/sigma Where mu is mean  And sigma  is…

Q: What is the analysis of variance.Interpret results

A: The analysis of variance is a statistical tool which splits the overall or aggregate variability in…

Q: What formula is used to gain information about an individual data value when the variable is…

A: Solution: 6. Let X be the random variable. From the given information, X is normally distributed.

Q: a sample of 60 grade 9 student age was obtained to estimate the mean age of all grade 9 students. x…

A: A sample of 60 Grade 9 students' ages was obtained to estimate the mean age of all Grade 9 students.…

Q: A population of marine gastropods has shell lengths that are normally distributed with mean μ=7mm…

A: For large sample size (n>30), let X be a random variable following normal distribution with mean…

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: If the assumption of constant variance is violated, you can transform the response data True or…

A:

Q: Why Calculation of power is more complex for Analysis of Variance?

A: Introduction: In Statistics, power of a test is defined as the capability of a test to detect…

Q: If other factors are held constant, as the sample variance increases, the estimated standard error…

A: Given: Sample variance increase and effect on the estimated standard error

Q: The average number of newspapers for sale in an airport newsstand is 12, and the variance is 25. The…

A: We have given that  Average and variance for newspapers.  Average = 12 Variance = 25 Standard…

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

A:

Q: The foreman at a large plant estimates that there are defective parts about 1% of the time.  If the…

A: It is given that n =20,000 and p = 0.01.

Q: How are you able to get the standard variance from a TI-83 calculator?

A: Enter the given data into the list. Press the STAT button and then press ENTER. Enter the first…

Q: What does it mean that the variance (computed by dividing by N) is a biased statistic?

A:

Q: Explain the variance of the sum or difference of the two variables X and Y ?

A: Variance of sum of two variables: The variance of the sum of two or more random variable is equal to…

Q: Based on your understanding of how we calculate an ANOVA, what type of variance is most important to…

A: ANALYSIS OF VARIANCE (ANOVA)                   Analysis of variance (ANOVA) is a…

Q: The weekly income for a taxi driver during the first three weeks of lock down were recorded as…

A: Given, The weekly income for a taxi driver during the first three weeks of lockdown was recorded as…

Q: what does MS stand for in analysis of variance?

A: Solution-: What does MS stand for in analysis of variance?

Q: Critically discuss the relationship between the concepts of Regression and Analysis of Variance…

A: INTRODUCTION :    Regression: If there are two or more variables in terms of the original units of…

Q: true or false MSBetween represents the variability that is only affected by unsystematic factors.

A: The statement is not true.

Q: What is the effect of an increase in variance of the different scores in repeated measure design

A: Given information: It is given that the variance of the different scores is increased in repeated…

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: Why is it impossible to calculate a negative F value when using an Analysis of Variance to test a…

A: According to the F statistic for ANOVA,  MST =Mean square of treatment MSE = Mean square error In…

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: Two samples, each with n = 5 scores, have a pooled variance of 40. What is the estimated standard…

A: Given Datan1 = n2 = 5pooled variance = 40Estimated standard error is given by

Q: If, in an analysis of variance, you find that MSTR is greater than MSE, why can you not immediately…

A: While performing Analysis of Variance (ANOVA), we calculate the test statistics which is the ratio…

Q: A traffic officer suspects that the mean number of car accidents every week is 4. A sample of 16…

A: Given,  n = 16 μ = 4x¯ = 7σ = 4α = 0.05

Q: Explain Variance and efficiency?

A: