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Bias correction for wireless-only households We compared model predictions for 2011 that incorporated respondents who could only be reached by cell phone with model predictions that did not incorporate these respondents in order to derive a correction for earlier years in which the wireless-only population was excluded

While traditional coffee can feel too strong or cause jitters, the Caramel Coffee vape provides a gentler effect

By dividing the change in one variable by the change in the other, researchers arrive at a coefficient that reflects price sensitivity

The retailer may have paid the over-the-road commercial smuggler more than he or she would have paid a legal cigarette distributor, but the retailers after-tax profits will still be higher than they would have been if the retailer had bought the cigarettes and stamps legally