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I know how to do the things but the one thing that I forgot is how to calculate |dw:1447253034082:dw|
x bar usually means the mean (average)..
That "2s" part is stumping me. It's been a while since I calculated and I forgot hot to find it
The "s" is standard deviation..
Yes, that part I got down. It's just knowing how to get the "2s"
I'm learning the same thing tbh. I have a formula for how to find "s".
I will attach something to help make it more clear what I am trying to achieve.
Ohhh, the 2 in front of the "s" is just telling you which number it is..
I did this worksheet a while back and I forgot how I found the answers. It was so easy and I actually understood it but now my brain seems to not want to cooperate, haha
What do you mean?
|dw:1447253373002:dw| here's a formula for standard deviation.. as you see the numbers behind (or can be in front of) the x represent which one it is..
It is just saying that is your observation number...
I still have no idea, I'm sorry
Okay, so can you try to clarify what you're asking?
I guess what I'm trying to ask is how I can find the measurements that fall within the interval x ± 2s and so on
Have you learned about the 97%, 68%, 99.7% rule yet?
Yes, that's exactly the topic I am working on
Okay, well can you draw out the curve graph for me and I can help you from there..?
Goodness, I've never used the cruve graph before, tbh. I usually just go by equations
So since it is asking for 2s, you would do 100% - 96% since the 2nd one was 96, and you'd get 4%.. Then you divide 4 by 2 because the curve graph is symmetric.
So it should be 2%..
Ohhh, okay I see what you're saying. Well, thanks for helping me with this! I appreciate it (:
You're welcome lol. Sorry it too me so long to get what you were asking. :P