Question

Is the sample representative of the population?

population: swimmers
sample: every 5th person entering the community pool

A.
representative

B.
not representative

Answer 1

What do you think? :)

Answer 2

A

Answer 3

Ok. Could you explain your thinking? So I know you're on the right track?

Answer 4

Are you familiar with the different types of sampling?

Answer 5

i guesses..

Answer 6

Great! What type of sampling is this?

Answer 7

is the ans correct

Answer 8

that's alright. does stratified sampling ring a bell?
OK a quick question
Does the problem say the the population is the swimmers in the community pool?
Or just swimmers in general?

Answer 9

thanku ....so A is correct

Answer 10

I'm sorry I have to correct an earlier statement.
the sample is systematic, not stratified
Sorry, mixed them up because they both start with s...

Answer 11

So the answer is not exactly correct.

Answer 12

Do you want to try and guess why?

Answer 13

It has something to do with sampling from the community

Answer 14

@Koikkara

@Destinymasha

Answer 15

So because it's sampling just from one community pool, we are not getting a representative sample from all swimmers all over the world.
That one location could a population with a certain trait that allows them to swim super fast or super slow.
And you could get a skewed result from that one location.

Answer 16

Does this make sense? Do you want me to go back and explain anything I've said so far?

So therefore the answer should be B - not representative!