Anyhows. Mathematics; statistics; Central Tendency- Can a Standard Deviation value [You know, from a 'Bell Curve'.] Anyhows can a Standard Deviation value be a minus? You know, -4 for example.
2006-10-28 07:03:58 · 4 answers · asked by smile 3 in Science & Mathematics ➔ Mathematics
Standard deviation can be positve or negative, depending on which side of the bell curve you are looking at. If the lhs it is negative and rhs positive. Usually in problems you take it as positive when it is on the lhs, but is stated as plus or minus the s. Zero is the mean value and what is lhs of zero is negative and rhs is positive for normal form and vice versa othervice.
2006-10-28 07:24:53 · answer #1 · answered by Mathew C 5 · 0⤊ 0⤋
No, because standard deviation is a square root of variance, which is a sum of squared deviations frm the mean. Since standard deviation is a square root of variance, it can only be positive or o.
2006-10-28 14:08:51 · answer #2 · answered by Samir K 1 · 2⤊ 1⤋
No, standard deviation is positive by definition.
2006-10-28 14:17:30 · answer #3 · answered by Anonymous · 1⤊ 1⤋
yes
2006-10-28 14:06:41 · answer #4 · answered by yankeestud5015 1 · 0⤊ 2⤋