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.
A large chicken could even take about 2 hours to fully get roasted. The general thumb rule for preparing roast chicken is a cooking time of about 20 minutes for every pound of meat and another 10 to 20 minutes at a temperature of 350 degrees F in the oven. Hence, if you want to prepare a chicken roast to serve 4 â 5 people, you would require about 5 lb meat and a total cooking time of 1 hour 50 minutes. Some people, however, prefer to roast the chicken on high heat of about 450 degrees F for the first and last 15 minutes (a total time of half an hour).