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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.
 one year ago
 one year ago
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.
 one year ago
 one year ago

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amistre64Best ResponseYou've already chosen the best response.1
http://omega.albany.edu:8008/mat108dir/exam2prep/prankm2h.html i think this might be helpful fo rthis
 one year ago

amistre64Best ResponseYou've already chosen the best response.1
i cant seem to work out the steps :/ but does any of it sound familiar? or were you thinking a different method?
 one year ago

kitty159Best ResponseYou've already chosen the best response.0
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
 one year ago

amistre64Best ResponseYou've already chosen the best response.1
z score for .9000 is what, 1.28 1.28 * .65 = .832 a zscore of 0.83 gives a percent near 79.7%
 one year ago

amistre64Best ResponseYou've already chosen the best response.1
not sure i understand that last post
 one year ago

kitty159Best ResponseYou've already chosen the best response.0
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.
 one year ago

amistre64Best ResponseYou've already chosen the best response.1
im not sure the formula, i have to use a table
 one year ago

kitty159Best ResponseYou've already chosen the best response.0
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
 one year ago

amistre64Best ResponseYou've already chosen the best response.1
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
 one year ago

amistre64Best ResponseYou've already chosen the best response.1
http://4.bp.blogspot.com/_5u1UHojRiJk/TEh9BHxxPUI/AAAAAAAAAIQ/DafeQNMYFoE/s1600/ztable.gif ztable .25*.65 = .1625, or a zscore of about .16
 one year ago

amistre64Best ResponseYou've already chosen the best response.1
.16 is equal to .16, 50 so about 6.4%
 one year ago

amistre64Best ResponseYou've already chosen the best response.1
im not sure im doing it correctly tho :/
 one year ago

kitty159Best ResponseYou've already chosen the best response.0
ok got it found a table was guessing these
 one year ago
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