STATISTICAL TECHNIQUES AND TOOLS
MULTIPLE REGRESSION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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In a data set containing the values of two variables y (e.g., demand for a commodity product), and x (e.g., price), the values of y decrease at a constant or proportional rate as the values of x increase the graph of y versus x looks like ____
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a downward-sloping straight line
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an upward-sloping straight line
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a two-dimensional plane
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a curve
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Explanation:
Detailed explanation-1: -y – is known as the dependent variable (endogenous) x – is known as the explanatory variable (exogenous).
Detailed explanation-2: -In statistics, bivariate data is data on each of two variables, where each value of one of the variables is paired with a value of the other variable.
Detailed explanation-3: -the correlation between y and yhat between y and yhat is R, the square root of the R^2 of the regression. (In this case, yhat and y are positively correlated, so we don’t have to worry about the sign of R.
There is 1 question to complete.