Question

A data set of size 19 has correlation coefficient of r = –0.432. Test the significance of r at the 5% level and at the 1% level

Answer 1

this one lol

Answer 2

correlation coefficients .. havent done that in my stats class yet ... so id have to look it up

Answer 3

thanks, this is a tough one

Answer 4

do we have any options for it?

Answer 5

with a size of 19:

a = .05 gets us .456 as a critical value
a = .01 gets us .575 as a critical value

Answer 6

-.432 is inside of the critical region .. but how that applies i aint got a clue :)

Answer 7

r is significant at 5% and at 1%.
r is significant at 5%, but not at 1%.
r is is not significant at 5% or at 1%.

Answer 8

i can find it; but i got no idea how to determine if its significant or not; do you recall what makes it significant?

Answer 9

at 5% we get

<.......-2.11.......r=-1.97.............+2.11.......>

or

<.......-.456.......r=-.432............. +.456.........>

Answer 10

at 1% the intervals get larger so its still between the values...

Answer 11

so it would be r is significant at 5% and at 1%

Answer 12

from what I can tell; its in the "fail to reject" region :)

Answer 13

thanks

Answer 14

youre welcome :)