Maths Sample Moments Question

They're fairly well known - have you looked at your notes/googled?
If you have a problem, can you post the full question (is this UG?) and what you've tried/describe what problem you're having.

I'm UG, simply I want to try and prove them, but I'm not sure how to.

So you have notes, what have you covered? Also, can you upload the full question pls?

The full question is just "Prove the following identities" and thats what I need to prove. I know that the raw sample moment is m'k = 1/n (sum Xi^k) and the central sample moment is mk = 1/n (sum (Xi-Xbar)^k). I've seen the identities on the internet but they all just say the answer and I'm not sure how they actually get to that answer.

edit: sorry I don't know how to do symbols of sums etc

The first two parts are easily available, they were top of the list when I googled (to check) last night. But it's generally good to prove the simpler ones yourself. It's also good to upload a pic of the actual question and any other relevant parts. Can you pls do it.

Have you been tried the first one? It's actually hard not to get it correct. Upload what you've tried?

I don’t know what else of the question you want me to upload? That’s the whole question.
This is what I have so far:

I don’t know what else of the question you want me to upload? That’s the whole question.
This is what I have so far:

A picture of the question pls.

Surely you're trolling?

No. It helps to see the question and how things are defined.
However it also seems to say this is your homework, so I guess you should do it.

Obviously, but I want some help, as you should get help when you are struggling! You're clearly not going to help me, if your next message isn't helpful I'm not gonna bother.

See the questions in #9.

In your OP there is no indication of what you'd done/what problems you're actually having. Both things will get more informative responses quicker. A picture of the actual question helps as sometimes people don't give a full description. See the sticky at the top of the forum.
https://www.thestudentroom.co.uk/showthread.php?t=4919248

Obviously, but I want some help, as you should get help when you are struggling! You're clearly not going to help me, if your next message isn't helpful I'm not gonna bother.