I dont know how to find the percentiles for the rest of the data...what should I do?
2006-09-12 10:34:06 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
There is no precise formula.
Handy percentiles to remember are
2.5% and 97.5% -- close to Z = +/- 2
(i.e. 95% lies between these values)
16% and 84% -- close to Z = +/- 1
(i.e. 68% lies between these values)
Otherwise, look for tables.
1%: -2.32
2%: -2.05
3%: -1.88
4%: -1.75
5%: -1.64
6%: -1.55
7%: -1.48
8%: -1.41
9%: -1.34
10%: -1.28
15%: -1.04
20%: -0.84
25%: -0.67
30%: -0.52
35%: -0.39
40%: -0.25
45%: -0.13
etc.
2006-09-12 10:55:44 · answer #1 · answered by dutch_prof 4 · 0⤊ 0⤋
Bell Curve Percentile
2016-11-12 04:33:33 · answer #2 · answered by ? 4 · 0⤊ 0⤋
percentiles is 25% lower percentile
75% upper percentile
2006-09-12 10:57:48 · answer #3 · answered by Anonymous · 0⤊ 0⤋
You just memorize them.
x% between 1st standard deviations etc.
Memorizing is the best way to go.
2006-09-12 10:39:04 · answer #4 · answered by p_rutherford2003 5 · 0⤊ 0⤋