Datasets:
NationalTutoringObservatory
/
MathEd-PII

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8
student
The distribution of the percentage of foreign born residents in the 50 states is not approximately normal because it isnt bell shaped and shows a right skew and a cluster of data between 0 and 10 percent foreign born residents
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volunteer
yes thats perfect
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student
Great
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student
How can I figure out if its normal or not for 13?
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volunteer
use the SD to see if the min and max are 3 sds out of the mean
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student
If its 3 sds out of the mean does that mean it isnt bell shaped?
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volunteer
it means it is
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volunteer
iusually the min and max are 3 sds out
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student
So do i gotta add and subtract 8049 3 times by 10614¿?
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volunteer
yes
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student
Ok
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student
I got 34761 for adding
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student
and -13533
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volunteer
so i dont think its bell vurved
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student
So if it’s bell curved it stays within min and max?
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volunteer
yes
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student
But if it exceeds the minimum and max its not a normal distribution
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volunteer
exactly
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student
Got it
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student
Noted
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student
Ill write it out by hand at the bottom of 13 and you tell me if it sounds good
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volunteer
ok
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student
How’s that
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volunteer
perfect
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student
Great
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student
Is the answer e do you think
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volunteer
not quite, a histogram is the best
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volunteer
a stemplot and a dotplot can't give a bell curve
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student
Ill pick stemplot
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student
Cuz in a dotplot at least you see a bit clearer
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volunteer
no, histogram is the best option, al the other choices are hard\
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volunteer
to see the distribution
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student
Yeah but since it said least helpful i had to pick 1
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student
Shall i move on
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volunteer
ohh sorry it would then be a stemplot you're right
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student
Yesh
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student
yes
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student
Youre good
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volunteer
for this one draw the bell curve and label all the marks
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student
Got it
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volunteer
nice, so at what number does the weight go under 9?
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volunteer
or what tick
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student
8.97?
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volunteer
i would use 9.02
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volunteer
since your looking for the first number thats greater than 9.02
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volunteer
now you now everything between 9.02 and 9.22 os 95%, so what is everything outside 9.02 and 9.22 equal to in percent form?
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student
Is it 5 percrnt?
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volunteer
yes
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volunteer
but thats for both sides, so you must divide by 2 to get just one side
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student
2.5 percent
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volunteer
exactly
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student
Got it
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volunteer
so approx 2.5% is below 9
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student
And this is likely to pose a problem for the company because people arent getting the right amount of chips in their bag which will cause their company to lose money?
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student
And therefore they wont be able to produce chips?
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volunteer
well only 2.5%, so I don't think it will be a big problem
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student
Ohhh ok
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volunteer
also no one is going to realize the difference between 9 and 8.97
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student
so the opposite of what i said
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student
got it
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student
but if it was like 75 percent
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student
then that would mean what i said
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volunteer
then yes it would be a problem
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student
Ok
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volunteer
its very subjective so it depends on wha tyou think
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student
Yeah
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student
I have about 5 more and im done
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student
Is that fine?
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volunteer
i can probably stay for 1 or 2, but I have to go after that
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student
Alright thanks
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volunteer
you can always end this session and join a new one with a new instructor
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student
Yeah
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student
Actually i have to go now
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student
is that ok
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student
thanks for your help
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student
Hello
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volunteer
Hello :)
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student
How are you?
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volunteer
I’m good, are you in need of assistance?
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volunteer
I see your picture, are you in need of help with both problems?
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volunteer
Would you like to start with 1?
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student
yes
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volunteer
Ok :)
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volunteer
So, do you know what domain and range are?
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student
domain is range of x values
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student
range is range of y values
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volunteer
Good :)
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volunteer
Wow, very good. All of that looks absolutely correct
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student
Thank you
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student
Do you happen to have a mic or nah
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volunteer
I am now allowed mic access I do apologize
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volunteer
Not*
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student
oh
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student
np
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volunteer
I believe it is this websites policy
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student
so 2. is a quadratic right
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student
can't you just click the microphone button?
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volunteer
Yes 2 would be quadratic to the look of it :)
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volunteer
I can however it says that it disallows me mic access
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student
oh
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