"Dude, Life is a journey of learning, you keep on learning something in each and every aspect of your life. Add some more through this page. Most of you may not know these things...."
WHAT IS PRECISION
Many of you may come across a term precision. Most of the analytical work in chemistry related deals will have some sort of this term used. Let me clear you about precision
The precision of something just means that the result can be repeated again and again. Everytime yu repeat an experiment, you will get the same result. But that doesn't necessarily mean that the results are accurate! Your measurements, results, whatever can be very precise, but completely inaccurate. Accuracy is how close something is to the true value.
For example, say I have a ruler. I have used this ruler to measure my table 10 times. Every time I measure the table, I get a measurement of 10 ft. My measurement is very precise. However, what I don't know is that there is a fault with my ruler. The inches on my ruler are not true inches. Each inch may actually be only 1/9th of an inch. Or all the inches on my ruler may not even be the same. So while my measurements I took with my ruler 10 times are precise, they are not accurate becuase there is fault with my ruler.
Something can be precise, but not necessarily accurate! I would say that this the biggest limitation of precision. A precise measurement is not always a reliable one!
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