00:01
In this case, they ask us to explain why a poll may be unreliable information.
00:06
So it seems to be a poll that was done on twitter.
00:09
So the options are the responses to this poll will not be in dependence.
00:13
Twitter users usually take the poll multiple times.
00:17
Well, yes, but that can be avoided.
00:21
And so that can easily be avoided.
00:24
So it's not a very good reason.
00:27
A poll given on twitter is voluntary response sample and is likely to be biased.
00:31
Now, that one is very reasonable, see? that one is very reasonable because, first of all, it will be only people who are on twitter.
00:39
Secondly, the people who respond usually have a bias towards certain response.
00:44
There's a lot of people, there's non -response bias in this case too...