for each 1% increase in the pre-statistics course grade, the predicted introductory statistics course grade will increase 0.981%. or each 1% increase in the pre-statistics course grade, the predicted introductory statistics course grade will decrease 0.147%. for each 1% increase in the pre-statistics course grade, the introductory statistics course grade will decrease 0.981%. for each 0.981% increase in the pre-statistics course grade, the predicted introductory statistics course grade will increase 1%.