0
Still curious? Ask our experts.
Chat with our AI personalities
Ross
Blake
FranAdd your answer:
Earn +20 pts
What does precision mean in maths terms?
In mathematics, the word precision is used to describe the total number of digits (the number of significant figures) used in a number to approximate another number. For example, given a number 145.37823 the number 145 approximates the previous number with a precision of 3, and 145.3782 approximates it with a precision of 7. In other words, in maths, at least arithmetically speaking, precision is just another word for significant figures. In statistics, precision is usually a measurement of how well a measurement system gives consistent results, and is the reciprocal of variance.
What digit in the following number is the one that determines its precision in 345.82?
Always the last number, so in this example the precision is to hundredths.
What number in 30.47 determines its precision?
7
What is the precision of 15 cm?
15 is an exact number. It is a precise number.
Which digit in the following number is the one that determines its precision 10.846?
If a number is given to the true degree of precision, this is always determined by its last digit - in this case, 6.
