Question

Help

Answer 1

Does the following study contain bias?
Due to an up-coming county election, some candidates want to conduct a poll to determine the opinions of county residents on some of the major issues. Volunteers are placed through-out the county at major intersections during the afternoon rush hour when people are returning home from work. Motorists were then randomly selected for the sample.
No, because the sample was selected randomly. *myanswer
Yes, because the sample over-represented people who drive vehicles.

Answer 2

Drive Cars, Have Jobs, Willing to Stop.

It is also substantially self-selected, since you can't pull people out of their cars.

Answer 3

So, am I right?

Answer 4

You tell me. Formulate an opinion. Rely on your instincts.

Answer 5

It is biased, because it does not include a sample of the population that do not drive

Answer 6

There are random sampling for specific groups that fall into the category of stratified or cluster sampling where samples are criterion specific such as study of doctors, or students etcetera etcetera, but the one you indicated does not fit to those types. Therefore, it is biased sampling under "selection bias".

Answer 7

so if the sample size only involved people who drive, then there is an over-representation of that particular sample compare to the whole population, those that do not drive or those that do not even use major intersections and many other people.

Answer 8

@nincompoop did you get suspended?
Because that's what happened to me when I gave out answer after giving an explanation :3

Answer 9

*an answer and after that giving

Answer 10

I did provide an answer but my response involved explication of bias sampling such as selection bias (there are different kinds) and other modes of sampling that may appear biased but are actually randomized such as stratified or clustering.

Answer 11

@nincompoop You still provided the answer before the user interacted with you. My advice, delete your reply containing the answer and then wait for the user to respond. Then answer. Otherwise, like me, you'll probably get suspended.

Answer 12

See how I did not use right away the choices provided and I used my own reasoning from my background of the subject.

Answer 13

"It is biased, because...", you answered first though. Idk, I mean, I did the exact same thing and just got suspended.

Answer 14

too bad for you

Answer 15

this is not about you, this is about statistics

Answer 16

No, it's about not giving a direct answer

Answer 17

I will not change my response.

Answer 18

Then you'll have to be reported.

Answer 19

I mean I could be 50% wrong with my response.

Answer 20

That doesn't change the fact that you gave a direct answer and explained afterwards

Answer 21

So what do you think is the answer?

Answer 22

why so many people here :\

Answer 23

it does since the girl who asked the question is asking for others opinion on if she's right.

Answer 24

guys lets stop this stupid argument.

Answer 25

the asker came offline from your argument

Answer 26

wrong. she was already gone when I decided to give my piece

Answer 27

:\

Answer 28

you're 100% incorrect

Answer 29

i'm 0% correct

Answer 30

laughing hysterically inside my head

Answer 31

@pooja195 Well what do you think?

Answer 32

well, for pooja everything is a direct answer :( so lets not ask her.

Answer 33

@MysticalFlames what do you think is the answer and provide your reasoning.

Answer 34

I don't know stats yet so I can't agree/disagree with anyone. Sorry.

Answer 35

i agree with nin

Answer 36

"LOL*

Answer 37

@MysticalFlames what do you think is the answer and provide your reasoning.

Answer 38

@nincompoop That's not what this is about. You gave an answer without the asker interacting with you. That's not allowed. @pooja195 I'm disappointed you haven't said anything yet. Look at her answer.

Answer 39

Tbh the asker never interacted with either of the people who answered the question which shows the asker wasn't interested in learning or felt that they had better things to do. I would leave the descisoin to punish anyone to a mod.
@jigglypuff314

Answer 40

@pooja195 Actually, the asker did. With the first person. The mod...

Answer 41

I'm not a mod I can't do much about the issue. In my perspective it was a direct answer. But you'll have to wait for a mod sorry.

Answer 42

For me, if the OP has already presented sufficient work and discussion, let's all feel free to provide encouraging reassurance - which certainly may include a reiteration of "the answer".