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We use analysis of variance (ANOVA) in the context of the linear regression model to derive R2.We denote the total variation in y as Σ(yi−y ̄)2, which is the numerator in the formula for the variance of y. What is this total variation called?Total sum of squaresTotal errorSquared errorRegression error

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Select all that applyWhich of the following is true of qualitative forecast methods? Select all that apply!Multiple select question.Useful to forecast variables, such as product sales and product defectsUseful when historical numerical data is availableUsed when future results are suspected to depart markedly from results in prior periodsAttractive when historical data are not available
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