The maximum number of significant digits is called the

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Accepted Answer

Welcome back everyone. Why is it necessary to use the correct number of significant figures when reading and recording measurements, choice A states to enhance readability of numbers. Choice B states to reduce the magnitude of the reported numbers. Choice C states to indicate the precision and uncertainty of measurements and choice D states to make the reported values appear larger. Let's recall that when it comes to significant figures, significant figures will include the measured values which we should recognize are certain values and significant figures will also include an estimated digit in which we would consider estimated digits uncertain values. Now, typically this is just going to be at least one digit and as a whole measured values with an estimated digit for a given integer would reflect the reliability of that measurement as well as some of the uncertainty within the measurement too. And so ultimately, these two factors concerning significant figures correlate to define the accuracy and precision of a measured value. And based on what we've outlined, because Choice A only discusses the readability, which is true that we would be able to enhance the readability of a number. It's not the primary reason as to why using the correct number of sick figs is necessary. So let's rule out choice A then looking at choice B to reduce the magnitude of the reported numbers is more. So going to be concerned with rounding. So we're going to rule out choice B, it's not the best answer for us. Next, we have choice C which again, directly correlates to what we outlined as far as measured values and the inclusion of an estimated digit to ultimately tie to the accuracy and precision of a measure. So choice C will put a check mark by it's looking like a great answer choice since it indicates exactly for precision and uncertainty of measurements. And then in choice D making a reported measure appear larger in value is not the objective for using significant figures properly. So we're going to rule out choice D, this leaves us with choice C as our best answer which states that the necessity of using the correct number of sig figs when reading and recording measurements is to indicate precision and uncertainty of measurements. I hope this made sense and let us know if you have any questions.

The maximum number of significant digits is called the

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