Because to be this exact we would have to measure down to the size of the atom, and this isn't important/cost effective/practical in 99.999999% of the areas that we would use measurements in.
Almost every measurement is done by humans, and as we know, humans are far from infallible.
Good question. Suppose you had a line segment that was two inches long and you divided it into three equal portions. Dividing 2 by 3 on your calculator, you learn that each portion is 0.666 666 666 666 666 666 666 667 inches. Wow, that's pretty precise. But wait. When you measured the segment, did you obtain a reading of 2.000 000 000 000 000 000 000 000 000, or was it more like 2.0 inches? By mathematical operations we can generate figures of astonishing apparent precision, but they'd no more accurate than our least accurate measurement.
No, because being accurate at a game of darts is different than being precise. Being accurate is the closest to the goal, and being precise is hitting the same spot over and over again. You can be precise and hit the 1 point multiple times, or you can be accurate and hit the bulls-eye over and over again.
Because it is impossible to know exactly the measure of a quantity; statistical variations are absolutely unavoidable. A measurement is correct only if it is expressed with the calculated uncertainty.
There are some measurements which maybe inexact because the characteristic which is being measured is continuous and so an exact measure is not possible. However, that is certainly NOT the case for measures such as the number of people in your class at a specific time or the number of pet dogs that you have. So the assertion in the question is rubbish.
Probably because your measurer doesn't know how to measure exactly.
because measurements are always made to the "nearest something", whether it is stated or not.
How uncertainty arises from length, temperature, and volume measurements.
Because not every measurement is exactly correct
I am uncertain how to use a dictionary.
Although it was cloudy, he was uncertain that it would rain.
an uncertain belief
uncertain
Uncertain
Uncertain
uncertain
The last digit is insignificant figure or uncertain .
It is considered to have begun in 1078, however the exact date is uncertain
It could be pear, as the upper measurements are smaller than the lower measurements. If it was hourglass, the measurements should be more or less the same on the top and the bottom.
I was uncertain about whose voice it was.He was uncertain about the results.
In the past, this was considered to be the perfect figure measurements for a woman.
an uncertain man's relationship would b jus as uncertain as he is...
no, sorry
Uncertain etiology means the cause is unknown.
The position and momentum of electrons are correlated; if the accuracy of measurements increases one inevitably decreases to the other.
He felt uncertain about the future.