Haya Posted December 22, 2016 Share Posted December 22, 2016 What does this symbol mean? I pointed to it using the red color. http://www5.0zz0.com/2016/12/22/18/706933985.jpg Link to comment Share on other sites More sharing options...
Klaynos Posted December 22, 2016 Share Posted December 22, 2016 Plus or minus. So 5 pluss or minus 2 means either 3 or 7, normally this implies the error bars. So the number is in the range of 3 to 7 but we measured 5. Link to comment Share on other sites More sharing options...
StringJunky Posted December 22, 2016 Share Posted December 22, 2016 (edited) Plus-minus. If some device is, say, 6 volts plus-minus 1 volt it means that it is 6v within a variation of 1v either side. Edited December 22, 2016 by StringJunky 1 Link to comment Share on other sites More sharing options...
Sriman Dutta Posted December 22, 2016 Share Posted December 22, 2016 Its the plus-or-minus sign. You will see such signs typically in the overroot of a perfect square, and also in the quadratic equation formula. 1 Link to comment Share on other sites More sharing options...
Haya Posted December 22, 2016 Author Share Posted December 22, 2016 Plus or minus. So 5 pluss or minus 2 means either 3 or 7, normally this implies the error bars. So the number is in the range of 3 to 7 but we measured 5. Do you mean the error that occurred in measurement? Plus-minus. If some device is, say, 6 volts plus-minus 1 volt it means that it is 6v within a variation of 1v either side. Its the plus-or-minus sign. You will see such signs typically in the overroot of a perfect square, and also in the quadratic equation formula. Thanks Link to comment Share on other sites More sharing options...
Klaynos Posted December 22, 2016 Share Posted December 22, 2016 Do you mean the error that occurred in measurement? Yes, for the most part. But can be interpreted more broadly than that. A errors may come from other sources such as the error in constants. Link to comment Share on other sites More sharing options...
swansont Posted December 22, 2016 Share Posted December 22, 2016 Do you mean the error that occurred in measurement? Uncertainty might be a better word. All measurements have a limited precision. Link to comment Share on other sites More sharing options...
Haya Posted December 23, 2016 Author Share Posted December 23, 2016 Yes, for the most part. But can be interpreted more broadly than that. A errors may come from other sources such as the error in constants. Uncertainty might be a better word. All measurements have a limited precision. Thanks Link to comment Share on other sites More sharing options...
AshBox Posted January 3, 2017 Share Posted January 3, 2017 The plus-minus sign (±) is a mathematical symbol with multiple meanings. Their use has been extended to many other meanings, more or less analogous. Plus and minus are Latin terms meaning "more" and "less", respectively. Link to comment Share on other sites More sharing options...
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