Consider that the 90-degree angle from the equator to the North Pole (latitude) is about 10,000 kilometers. So:
The precision of the recorded number (e.g., 38.047734), where the last digit is in the “millionths” position, might suggest that the position is known to about the nearest tenth of a meter (i.e., 0.111 meters). Here is where your knowledge of the difference between accuracy and precision comes in. TIGER data is rarely good to 10 centimeters accuracy. Ten meters might be more like it. Sometimes the last two digits are zeros in the files, which implies an accuracy of the nearest ten-thousandth of a degree, or about 10 meters—roughly 33 feet.