average blood pressure is 120/80, but blood pressure readings can range much higher or lower. typically someone is diagnosed with hypertension--high blood pressure--only when the blood pressure values are 140/90 or higher. however, any value greater than 120/80 increases the patient's risk of heart attack or stroke. finding that people have blood pressure values across the full range of the normal curve is consistent with . group of answer choices continual classification categorical classification medical classification dimensional classification