Question

What is the difference between measured value and true value?
A. Precision
B. Accuracy
C. Error
D. Least count

Answer 1

Hint: Measured value is the value of the quantity we measure in any way, may be with an instrument or bare hands. True value is the value of the same quantity or the variable which is its actual value. So these all should be kept in mind when we answer this.

Complete step by step solution: First of all let us check what actually true value and measured value means. A measured value is the value of a thing which is to be measured provided by a measuring instrument or measuring device. If we are measuring something with our bare hands also the value we got after the measurement is taken as measured value.it is expressed as the product of the value and the unit. It may be standardized and are given in percentage sometimes. By the way the actual value or the true value we got after the measurement using the perfect measuring devices and set up. The true value is fully free of error as it is measured in a perfect way. The measured value is compared with these true values to check the accuracy of the measurement we have done. True value can’t be obtained in an easy way as it is nearly an ideal condition. So every measurement we actually do is with some sort of error in it. Sometimes true values are fixed by only the theoretical way or by the calculation only.

So, here the correct answer is option C.

Note: A good precision is dependable on the aim, the data we are using and the audience we are working on. Precision means accuracy. A measurement with good precision and accuracy are considered as good measurements.