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Mathematics 8 Online
OpenStudy (jskinny0831):

help please for a medal!

OpenStudy (jskinny0831):

OpenStudy (hippoharry):

that looks scary

OpenStudy (jskinny0831):

@MuzykLyfe

OpenStudy (jskinny0831):

@jabez177 can u help?

OpenStudy (muzyklyfe):

Im sorry i hun i dont know this one

OpenStudy (wolfman77):

What grade work is this?

OpenStudy (jskinny0831):

12th grade

OpenStudy (jskinny0831):

Estimations and Predictions

OpenStudy (wolfman77):

Okay.

OpenStudy (jskinny0831):

do you get it by any chance?

OpenStudy (wolfman77):

I don't know this one, sorry. But @rebeccaxhawaii might. I'm still getting used to the Estimations and Predictions.

OpenStudy (jskinny0831):

oh okay thank you and hopefully she can help

OpenStudy (wolfman77):

No Problem.

OpenStudy (muzyklyfe):

Im just learning this right now, and im in 12th so its kinda confusing for me.

OpenStudy (jskinny0831):

oh i feel you, i just learned it too

OpenStudy (muzyklyfe):

Yeah, you'd think they'd lay off since the years almost over but no haha

OpenStudy (jskinny0831):

forreal!! haha i just wanna graduate already

OpenStudy (muzyklyfe):

I know only like 3 weeks away!! Cant wait for the end of school party!! Its so going to be work it.

OpenStudy (muzyklyfe):

Worth lol

OpenStudy (jskinny0831):

lol totally worth it! im super excited

OpenStudy (muzyklyfe):

Yep, although it kinda sucks that a few of my friends who are graduating with me cant go where we're going they arent 18 yet :/

OpenStudy (jskinny0831):

im on the same boat as your friends :/ im graduating 17

OpenStudy (muzyklyfe):

Ahhh, im graduating literally only a month after 18 so im barely going

OpenStudy (muzyklyfe):

Well im heading off, message me any time your pretty cool. Bye :)

OpenStudy (jskinny0831):

lucky!! thats better then nothing and okay will do :) likewise, byee

OpenStudy (jskinny0831):

@Bobo-i-bo

OpenStudy (bobo-i-bo):

where are you confused?

OpenStudy (jskinny0831):

on finding the sample mean

OpenStudy (bobo-i-bo):

Okay so the data set is: 3 lots of 25, 6 lots of 26, 4 lots of 27... etc. Does that help?

OpenStudy (jskinny0831):

i straight up dont get this at all and how to find the answer

OpenStudy (jskinny0831):

look ima be honest with you, im a senior and i wanna finish all my work to finally graduate

OpenStudy (bobo-i-bo):

XD

OpenStudy (bobo-i-bo):

I'm not telling you answers I'm afraid :P

OpenStudy (jskinny0831):

i know, you've told me that before

OpenStudy (bobo-i-bo):

So if the question is asking you to take the mean of something, it must be of some data shouldn't it? So what is the data?

OpenStudy (jskinny0831):

31?

OpenStudy (bobo-i-bo):

Nope each dot is one "data" point. And the value of each data point is the corresponding sample mean.

OpenStudy (bobo-i-bo):

Oh, and yes, the problem is asking for you to find the sample mean of the sample means...

OpenStudy (jskinny0831):

so what do i do

OpenStudy (bobo-i-bo):

Find the mean of the sample means...

OpenStudy (bobo-i-bo):

^^^ which part of the above do you not understand?

OpenStudy (jskinny0831):

okay i got 8.3333

OpenStudy (jskinny0831):

for the mean

OpenStudy (bobo-i-bo):

That is definitely not right... how did you calculate it?

OpenStudy (jskinny0831):

isnt it adding all the numbers and then dividing but how many there are?..

OpenStudy (bobo-i-bo):

In the key, it says there are 100 trials...

OpenStudy (bobo-i-bo):

which numbers did you add?

OpenStudy (jskinny0831):

where the dots ends

OpenStudy (bobo-i-bo):

hmmm, you should be adding the value of the dots, and the value of each dot is the number which it lies on top... for example the three leftmost dots each have a value 25 because they lie on top of 25

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