Question

The scatter diagram of SAT verbal and math scores in a state is roughly football shaped, and the correlation is 0.65. A student is on the 90th percentile of verbal scores. Find the regression estimate of this student’s percentile rank in math.

Answer 1

http://omega.albany.edu:8008/mat108dir/exam2-prep/prank-m2h.html

i think this might be helpful fo rthis

Answer 2

i cant seem to work out the steps :/ but does any of it sound familiar? or were you thinking a different method?

Answer 3

got the 90th percentile for thA student is on the 40th percentile of verbal scores. Find the regression estimate of this student’s percentile rank in math.is question it is 79.75 but I am stuck with the 40th percentile i.e mt answer for this is

Answer 4

z score for .9000 is what, 1.28

1.28 * .65 = .832

a zscore of 0.83 gives a percent near 79.7%

Answer 5

not sure i understand that last post

Answer 6

I got 79.75 as the answer for 90th percentile. I have the problem working out percentiles and need the formula to work out this I am now looking at the 40th percentile for the same question.

Answer 7

im not sure the formula, i have to use a table

Answer 8

High were can I find this table I have sat working it out would be helpful if you can let me know where I can get a copy of the table

Answer 9

a have a ztable that starts at z=0; percentile = 50

since the z is mirrored along a normal curve, percentile of 40 is the negavite of 60

z60 = 0.25 ; z40 = -0.25

Answer 10

http://4.bp.blogspot.com/_5u1UHojRiJk/TEh9BHxxPUI/AAAAAAAAAIQ/DafeQNMYFoE/s1600/ztable.gif

ztable

-.25*.65 = -.1625, or a zscore of about -.16

Answer 11

-.16 is equal to .16, -50

so about 6.4%

Answer 12

im not sure im doing it correctly tho :/

Answer 13

ok got it found a table was guessing these