Which of the following represents the concept of accuracy in measurements?

Prepare for the AQA GCSE Physics Exam with flashcards and multiple choice questions. Each question includes hints and explanations. Get ready to excel in your exam!

The concept of accuracy in measurements is best represented by the closeness to the true value. Accuracy refers to how well a measured value reflects the actual value of the quantity being measured. If a measurement is accurate, it means that it is very close to the true or accepted reference value.

For example, if you are measuring the length of an object that is known to be 100 cm, an accurate measurement would be one that is close to 100 cm. This is critical in scientific experiments where precise values are essential for valid results.

Other concepts, such as the repetition of measurements, standard deviation, and range of values, relate to the reliability and precision of measurements rather than their accuracy. Repetition helps to ensure consistent results, standard deviation gives an idea about the spread of measurements, and range indicates the difference between the highest and lowest values in a set of data. These aspects are important for evaluating the quality of measurements but do not specifically denote how close the measurements are to the true value.

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