Question

Worksheet help

Answer 1

@amistre64 @phi @dumbcow

Answer 2

Can you all walk me through this? It is stats related and it seems like you guys are the few that can help with things of that nature.

Answer 3

i mainly need help with the last one (#6)

Answer 4

i t looks to me that they are essentially creating a linear equation of the variables involved in the studies.

Answer 5

"Say you collect information on people's income, years of work experience, and whether they are a college or high school graduate"

income = b0+b1years+b2colG+b3hsG+e

i got no idea how correct the setup is, but the other problems point to this as some sort of format for a solution

Answer 6

Ha: college grads more income

Ha <= Ho

or something to that effect

Answer 7

with the hypothesis, wouldn't i have a mu equals for Ho
and then for H1 or Ha (both the same) have mu does not equal or <, >...etc?

Answer 8

@phi @amistre64

Answer 9

what is the process trying to determine? that might help us establish a hypothsis to play with

Answer 10

how experience affects income

Answer 11

but experience varies among high school and college graduates

Answer 12

H0: college grads make more than high school grads
Ha: college grads make make the same or less than high school grads

Answer 13

ok i guess i'll put that down.

Answer 14

thanks again! you're always a big help =)

Answer 15

if thats what we are trying to determine, then thats what i come up with :)

Answer 16

if we wanted to determine if college grads made different income ... then C = H, and C not= H

but i think we want to determine the C>H, or C<= H

Answer 17

@Jemurray3
can you help me with #1? i thought my friend was going to help me with that question but he doesnt seem to have the answer

Answer 18

all i have is that the quality of schooling in the neighborhood may not directly impact the median housing price... but i dont think thats right

Answer 19

Well that's one thing. But the variables involved are correlated and there's no real way to extract a causal relationship.

Answer 20

is that all i should put? i feel like i need more than that

Answer 21

my teacher is really picky

Answer 22

It just comes down to the fact that correlation does not imply causation. Regression analysis is good for showing relationships but not establishing causality.

Answer 23

ok that sounds good i guess.

Answer 24

It's neither my assignment, nor my class, nor my teacher so I can't really do anything but tell you that that's the case. To establish causal relationships it's important to delve more deeply into the issue than making a naive graph.

Answer 25

i agree.

Answer 26

can you also look at #2? i put: change the independent variable from their current age to 65 to see how they would do.
not sure about that though. my friend is also stuck on this one.

Answer 27

@hartnn @ash2326 could you guys help with the above ^^^^