#helppppp

64 messages · Page 1 of 1 (latest)

hot ingot
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I actually don’t understand why’s it 13 not 15

fair kestrelBOT
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hot ingot
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Idk if im doing jt wrong but the mean is 8.375 i think and the sd with calculator is 1.41.. so it should be like 6.975 to 9.775 within 1 sd so does that mean i include students with result 7to 9 which should be 15 students but the answer is 13 im doing something wrong right

craggy perch
spring stream
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$SD=\sqrt{\frac{\sum(x_i-\bar{x})^2}{n}}$

craggy perch
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why n-1?

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this is the whole class

spring stream
empty impBOT
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;( | 追放された興奮

spring stream
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where $x_i$ are the data points, $\bar{x}$ is the mean, and $n$ represents the population size

empty impBOT
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;( | 追放された興奮

craggy perch
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even as a sample, the standard deviation would be 1.312

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which also returns an answer of 13

spring stream
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yeah

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SD<2 or 3 most likely

hot ingot
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Maybe I did it wrong

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Did u put it in a calculator

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I keep getting 1.41

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Or maybe I’m doing it wrong in th calculator

craggy perch
craggy perch
hot ingot
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Like in the table u put 6 to 10 and 3 to 6 right

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Wait idk

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Waittt

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I’m tripping

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Right

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Maybe it’s not the right one

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Idk

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Oh it’s not sending

craggy perch
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that is the value of rt(2)

hot ingot
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Huhhh

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Im so bad at this

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What am I doing wrong whattt

craggy perch
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did you type anything in before the σχ?

hot ingot
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No

craggy perch
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no list of values or anything?

hot ingot
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I don’t think I did

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Oh the table

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I did the table wait

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That right

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And then

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Like

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Do the sd thing right

craggy perch
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i haven’t used your calculator so i don’t know how it operates

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are you sure those aren’t being plotted as points rather than frequencies?

languid marlin
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I assumed it was like a regression calculator

hot ingot
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I think I gotta convert the frequencies into fractions maybe

languid marlin
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Like best fit line type shi

hot ingot
hot ingot
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I think I’m cooked what

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Oh never mind

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I gotta turn frequency on in my calculator

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wtf

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I didn’t even know that was a setting

patent cloakBOT
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@hot ingot

<:HelpIcon:1304095958283321385>| Help Reminder

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modern ingot
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+close