###### Asked by Andy Blackwell Uncategorized

Uncategorized

# Which innovation of this era happened as the result of an error by a lab assistant?

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## Related Questions

###### Asked in Statistics, C Programming, The Difference Between

### What is the difference between hard error and soft error?

In computing and electronics, a hard error is an unrecoverable
error, typically the result of faulty hardware. A soft error is a
non-fatal error, typically occurring within a data stream, often as
a result of a minor power fluctuation. The hardware is not damaged
by soft errors -- only the data stream is affected -- thus
resetting or rebooting the hardware will typically resolve the
error.

###### Asked in Math and Arithmetic, Statistics, Percentages, Fractions, and Decimal Values

### Can percent error be negative?

Sometimes you will take the absolute value of the percent error
because your estimated number could be less than the theoretical,
meaning the calculation is negative. But an absolute value is
always positive. A percent error can be left as a negative though,
and this would be perfectly acceptable (or even preferred)
depending on what you're doing.
Answer:
In the sciences, a negative percent error indicates a low result.
If you have a 0% error, then your observed (lab) result was exactly
the same as the theoretical result. A 5% error could mean that your
observed result was a little high. A negative percent error is
possible; if your observed results were lower than the expected,
then you would have a negative percent error. A -5% error could
mean that your results were a little low.
Having a negative percent error isn't worse than positive
percent error -- it could mean the same thing. If you were to have
a choice in having a 20% error and a -5% error, the negative
percent error is more accurate.

###### Asked in Microsoft Excel

### What is IFERROR in Microsoft Excel?

IFERROR is used to deal with errors in a spreadsheet. Sometimes
errors need to be found in order to stop a greater problem. Some
errors are unavoidable, but when they are found there can be
something done.
A division by zero is an error. Sometimes this can occur. If it
does, the IFERROR will find it and give another option and if there
is no error, then the calculation will return its result. The
following function looks at a division formula. If there is an
error it will display Error in result, or else just display the
result of a formula:
=IFERROR(B3/A3,"Error in result")
It can be used to find any of the standard errors such as #NA!,
#NUM!, #REF! etc. So if you have a formula that you know could
result in an error such as those, then you could enter the formula
in an IFERROR function.

###### Asked in History of China, Great Wall of China

### What happened to the Great Wall near Baotou?

The Great Wall near Baotou was built in the Qin Dynasty, over
2,000 years ago. Because of wars and natural weathering and
erosion, most of the walls have been destroyed.
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