Ackerman and goldsmith (2011) compared learning performance for students who studied material printed on paper versus students who studied the same material presented on a computer screen. all students were then given a test on the material and the researchers recorded the number of correct answers. identify the dependent variable for this study. is the dependent variable discrete or continuous? what scale of measurement (nominal, ordinal, interval, or ratio) is used to measure the dependent variable?

Which of the statements best describes why the aggregate demand curve is downward sloping? an increase in the aggregate price level causes consumer and investment spending to fall, because consumer purchasing power decreases and money demand increases. as the aggregate price level increases, consumer expectations about the future change. as the aggregate price level decreases, the stock of existing physical capital increases. as a good's price increases, holding all else constant, the good's quantity demanded decreases.