in a race with 1400 entrants, steve was in 80th place. find his percentile rank.

Question

anonymous · Answer

Welcome to openstudy :D

debbieg · Answer

Percentile rank of X=
[(# values below X+0.5)/(total # of values)] *100%

anonymous · Answer

what's the value below

debbieg · Answer

The NUMBER of values below X +0.5

so if he came in 80th place of 1400, then there are 1400-81 values BELOW his placement.

debbieg · Answer

$\Large  \dfrac {\text {number of values below X+0.5}}{\text{total number of values}} \cdot100 $

anonymous · Answer

ty sooooooo much :) u save me lol

debbieg · Answer

lol no problem, happy to help.

anonymous · Answer

:)

anonymous · Answer

wait I have a question so I got 1319 over 1400 so how will I proceed on get if I don't know whats the x value$$[1319 x+.5 \div 1400] 100$$ so what will be my next step

debbieg · Answer

1320 IS the X value.

1319 is the number of values below X, just put it in the equation above.

$$[(1319+.5) \div 1400] 100$$

anonymous · Answer

oh ty soo much