Accuracy is the closeness of agreement between a measured value and a true or accepted value. Measurement error is the amount of inaccuracy. Precision is a measure of how well a result can be determined (without reference to a theoretical or true value). It is the degree of consistency and agreement among independent measurements of the same quantity; also the reliability or reproducibility of the result.
High heat method (this creates a crispy, darker skin): 1  Preheat oven to 450 degrees F (230 degrees C) and cook whole (thawed) chicken for 10-15 minutes. 2  Then reduce the temperature to 350 degrees F (175 degrees C) and roast for 20 minutes per pound. (Do not add the extra 15 minutes to the cooking time as with the regular method.) VIDEO: Orange Herb Roasted Chicken. Here's a roast chicken recipe that follows the regular-roast method.
Roast chicken is juicy and delicious. Find out how to cook a whole chicken here. Knowing how long to roast a chicken is key -- here are the calculated exact cooking times by weight. 2-1/2 to 3 pounds: Roast at 375 degrees F for 1 to 1-1/4 hours. 3 to 3-1/2 pounds: Roast at 375 degrees F for 1-1/4 to 1-1/2 hours.