Question

describe possible sources of random and systematic errors in the following measurement. speeds of cars recorded by a police officer using a radar gun. which of the following would be random errors in this situation? select all that apply. a. errors in the speedometers of the cars observed. b. errors made by the police officer in reading the radar gun. c. errors made by the police force when choosing which officer to check the speeds. d. errors made by using a radar gun that is incorrectly calibrated and consistently reads high or low. e. errors made when calibrating the radar gun. f. errors made by the police officer in recording the speeds.

Explanation:

Random errors are unpredictable and vary from one measurement to another. Errors in car speedometers can vary randomly between cars. An officer's reading and recording errors can also be random due to human - factors like momentary inattention. These are not consistent in direction. Errors in choosing an officer are not related to the speed - measurement process itself. Incorrect calibration (D) and calibration errors (E) are systematic as they cause consistent over - or under - readings.

Answer:

A. Errors in the speedometers of the cars observed.
B. Errors made by the police officer in reading the radar gun.
F. Errors made by the police officer in recording the speeds.