Four people participate in a shooting competition. Each person gets four shots. The diagram shows the target boards of each participant after their turn.
Which target has a low precision and a high accuracy?
A student carries out an experiment and reaches a result which is far from the true value. They carry out an evaluation of the experiment to identify potential sources of systematic and random errors.
Which of the following would not eliminate any systematic errors?
Performing more trials with the same equipment and using the same techniques
Performing more trials with the same equipment but using different techniques
Performing more trials with different equipment but using the same techniques
A fixed quantity is measured many times in an experiment that has experimental uncertainty. A graph is plotted to show the number, n, of times that a particular value of x is obtained.
Which graph could be obtained if the measurement of has a high precision and a low accuracy?
A student plots a graph of height, h, against time, t, to show the motion of an object in a fluid. They include the error bars on their plotted points and maximum and minimum lines with their associated equations.
Which of the following equations would correctly calculate the percentage uncertainty in the gradient of the graph?