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What is FALSE PRECISION? What does FALSE PRECISION mean? FALSE PRECISION meaning & explanation

false precision also called ovary

precision fake precision misplaced

precision and spurious accuracy occurs

when numerical data are presented in a

manner that implies better precision

than is actually the case since

precision is a limit to accuracy this

often leads to overconfidence in the

accuracy as well Mattson parry defines

the term false precision in a more

general way when exact numbers are used

for notions that cannot be expressed in

exact terms for example I am 90% sure he

is wrong often false precision is abused

to produce an unwarranted confidence in

the claim our mouth washes twice as good

as our competitors in science and

engineering convention dictates that

unless a margin of error is explicitly

stated the number of significant figures

used in the presentation of data should

be limited to what is warranted by the

precision of those data for example if

an instrument can be read two-tenths of

a unit of measurement results of

calculations using data obtained from

that instrument can only be confidently

stated to the tenths place regardless of

what the raw calculation returns or

whether other data used in the

calculation are more accurate even

outside these disciplines there is a

tendency to assume that all the nonzero

digits of a number are meaningful thus

providing excessive figures may lead the

viewer to expect better precision than

actually exists however in contrast it

is good practice to retain more

significant figures than this in the

intermediate stages of a calculation in

order to avoid accumulated rounding

errors false precision commonly arises

when high precision and low precision

data are combined and in conversion of

units false precision is the gist of

numerous very

Asians of a joke which can be summarized

as follows a tour guides at a museum

says a dinosaur skeleton is 100 million

and five years old because an expert

told them that it was 100 million years

old when he started working there five

years ago measures that rely on

statistical sampling such as IQ tests

are often reported with false precision