Datasets:
NationalTutoringObservatory
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MathEd-PII

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 Community
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student
yes it's really good
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volunteer
What do u think about f(0))?
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student
f(0)=-3
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volunteer
Yes excellent
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volunteer
I added confetti
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student
yess I loveeee
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volunteer
OK can u tell me whay f(0)) is NOT +2 ?
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student
bc its an open circle
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volunteer
Yes very good
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student
I have 3 more
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volunteer
OK If I run out of time I will tell you but let's keep going
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student
ok
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volunteer
OK I will copy pls wait
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student
es
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student
yes
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volunteer
OK
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volunteer
Now I am not sure what they mean by "algebraically" Do you know from your class?
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student
no
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volunteer
OK
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student
like solve it algebraically
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volunteer
maybe they mean not graphically
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volunteer
Yes maybe but there really is not solution
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volunteer
for the first one maybe they mean break it into two cases one wehre x + 3 >= 0 and one where x + 3 < 0
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volunteer
See what I mean?
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student
yea can u do it for me
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volunteer
OK I will type on board
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student
ok
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volunteer
I want to stree taht an ot sure htis what they want OK?
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student
ok
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volunteer
can u see what I type?
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student
yess
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volunteer
do u understnad why that comes from the abs value?
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student
kind
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student
kinda
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volunteer
OK
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volunteer
you see if x + 3 is pos we do not need the abs vlaue
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volunteer
But if it is neg, we need to change its sign
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student
got it
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volunteer
And this one confuses me. I think the domain is (-inf, inf) since we can plug in any x
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volunteer
sse waht I mean?
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student
sorry I have too go
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volunteer
OK One hint in 24 you cannot take sq root of neg nbr OK?
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student
thank you so much for today
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volunteer
You are welcome u did very well
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student
oh ok thank you
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volunteer
BYE BYE
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student
Maria
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[ { "pii_type": "PERSON", "surrogate": "Maria", "start": 0, "end": 5 } ]
volunteer
Hi Alice. I see the problem on the board do you need help with it?
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[ { "pii_type": "PERSON", "surrogate": "Alice", "start": 3, "end": 8 } ]
student
Yes
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student
ill try to attempt it
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volunteer
ok, if ur stuck or have an answer jus type in the chat
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student
Got it
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student
Is this how it should be labeled?
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volunteer
almost, remember that 95% wil be 2 standard deviations away from the mean both ways
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volunteer
so the 2 and 4 should be two tick marks away from 3
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volunteer
good, so what would the standard deviation be?
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student
.5?
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volunteer
yes! good job
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student
Great
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student
Percent?
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volunteer
no, just 0.5
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volunteer
standard deviation doesn't have units
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student
Ohh got it yeah i remember now
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student
Give me a minute im gonna write this out in my homework real quick
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volunteer
ok
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student
Thank you
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volunteer
are you going to try to solve this or do you need help?
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student
I need some help
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student
i dont get what it means by normal
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volunteer
normal distribution is like a bell curve, this ditrb=itbution looks like a normal curve
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student
Oh cuz its like this
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volunteer
yes exactly
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student
Got it
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student
How do i explain that do i just say the histogram displays an approximately jormal distribution because it is bell shaped?
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volunteer
yes, and the standard deviation is equally spaced
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volunteer
and approximately 68% of the datav falls in the first standard deviation
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student
How can i tell that 68 percent falls in the first std!
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student
?*
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volunteer
its just an approximation
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volunteer
just by eyeballing you can tell
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student
Between here and here?
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volunteer
yeah
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student
Alright
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student
Letd move on
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volunteer
alright just put it up
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student
It looks right skewed
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student
For 12
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volunteer
yes good
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volunteer
its not normal because it is not bell curve shaped
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volunteer
and the standard deviation is symmetrical on both sides of the mean
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student
Wait how can i see if the std is symmetrical on both sides?
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student
or how can i identify that based on this histogram?
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volunteer
the mean is approx where i drew the line
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volunteer
do you see how more data is on the left than the right
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student
Yes
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student
so its not symmetrical?
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volunteer
exactly
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volunteer
do u need help on 13 as well?
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student
Yes
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student
so for 12 id say something like
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