Instead, it is the single most important budgetary variable because it affects the size of the tax base and the amount of government spending linked to the level of employment.

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The size of the dose, though variable, is thus the maximum that will benefit any given embryo, so the mother is not so much discriminating among her offspring as trying to do the best by each of them.

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Few people are taught to examine not only the significance but also the size of the coefficient, which tells you how big an impact that variable has overall.

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