UniWiki:Manual of Style/Dates and numbers: Difference between revisions

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 * When expressing the difference between two percentages, do not confuse a percentage change with a change in [[Wikipedia:Percentage point|percentage points]].
-===<span id="Scientific notation, engineering notation, and uncertainty"></span>Scientific and engineering notation===
+===Scientific notation===
-* [[Scientific notation]] always has a single nonzero digit to the left of the point: not {{!xt|{{val|60.22|e=22}}}}, but {{xt|{{val|6.022|e=23}}}}.
+* [[Wikipedia:Scientific notation|Scientific notation]] always has a single nonzero digit to the left of the point: not {{!xt|60.22&nbsp;&times;&nbsp;10<sup>22</sup>}}, but {{xt|6.022&nbsp;&times;&nbsp;10<sup>23</sup>}}.
-* [[Engineering notation]] is similar, but adjusted so that the exponent is a multiple of three: {{xt|{{val|602.2|e=21}}}}.
+* In a table column (or other presentation) in which all values can be expressed with a single power of 10, consider giving e.g. {{xt|&nbsp;&times;&nbsp;10<sup>7</sup>}} once in the column header, and omitting it in the individual entries. (Markup: <code><nowiki>&amp;nbsp;&amp;times;&amp;nbsp;10<sup>7</sup></nowiki></code>)
-* Avoid mixing scientific and engineering notations ({{!xt|A {{val|2.23|e=2|u=m2}} region covered by {{val|234.0|e=6|u=grains of sand}}}}).
+* The number of digits indicates the precision. For example, {{xt|5&nbsp;&times;&nbsp;10<sup>3</sup>}} means rounded to the nearest thousand; {{xt|5.0&nbsp;&times;&nbsp;10<sup>3</sup>}} to the nearest hundred; {{xt|5.00&nbsp;&times;&nbsp;10<sup>3</sup>}} to the nearest ten; and {{xt|5.000&nbsp;&times;&nbsp;10<sup>3</sup>}} to the nearest unit.
-* In a table column (or other presentation) in which all values can be expressed with a single power of 10, consider giving e.g. {{xt|{{e|7}}}} once in the column header, and omitting it in the individual entries. (Markup: <code><nowiki>{{e|7}}</nowiki></code>)
-* In both notations, the number of digits indicates the precision. For example, {{xt|{{val|5|e=3}}}} means rounded to the nearest thousand; {{xt|{{val|5.0|e=3}}}} to the nearest hundred; {{xt|{{val|5.00|e=3}}}} to the nearest ten; and {{xt|{{val|5.000|e=3}}}} to the nearest unit.
-Markup: {{tlx|val}} and {{tlx|e}} may be used to format exponential notation.
 ===Uncertainty and rounding <span id="Uncertainty"></span> <span id="Large numbers"></span>===