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AP Statistics: Exploring Data Drill 1, Problem 2. Which of the following is the best way to display this type of data?
AP Statistics: Exploring Data Drill 1, Problem 5. Which pieces of information would we need to create this graph?
AP Statistics: Exploring Data Drill 2, Problem 3. Which set of points, if put in a scatterplot, would show us a positive correlation?
AP Statistics 2.2 Exploring Data 18 Views
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Description:
AP Statistics 2.2 Exploring Data. This five-number summary indicates a distribution that is possibly...what?
Transcript
- 00:04
And here's your shmoop du jour brought to you by reality television...[television showing static]
- 00:07
We're still waiting for them to combine the bachelor with survivor, where a
- 00:11
handful of people must survive on an island having only been given a rose [people by a campfire on an island]
- 00:15
each..yeah something like that.. Okay well here we go reality television for better
- 00:20
or worse mostly worse has taken over the airwaves in the 21st century just for
Full Transcript
- 00:25
fun ish we would like to construct a box plot that displays the number of minutes
- 00:30
that adults aged 30 to 45 spent watching reality television programming in one
- 00:35
week when we said funny ish right? The minimum is zero the first quartile, q1 is
- 00:41
62 the median is 125, the q3 is 133 and the maximum is 360 this five number summary
- 00:49
indicates a distribution that is possibly what? Other than boring...
- 00:55
All right here the potential answers...[mumbling]
- 01:01
All right well let's start by visualizing this sucker here is a number line that [A number line from zero to 360]
- 01:05
goes from zero or minimum to 360 our maximum; now let's plug in what else we [person plugging in a USB stick]
- 01:11
know let's think about what we would expect these other numbers to be if
- 01:15
there was no skew at all which incidentally makes it very tricky to [man hurts himself eating a kebab]
- 01:20
make chicken kebab but okay we're going from 0 to 360 so we would expect the
- 01:25
middle value to be around half that or 180 right instead we've got 125 which
- 01:31
all things being equal should probably be a bit more to the left and then
- 01:35
there's the third quartile at 133 well that's barely more than the median [numbers on a timeline and beyonce appears]
- 01:41
meaning that even the value of q3 is one we'd expect to be a little further to
- 01:47
the left well rather than having all our numbers spread out nicely and evenly
- 01:51
they're all bunched up on one side almost as if our last piece of data [numbers bunched up close together in a room]
- 01:55
smelled bad, maybe it's time to take a hint. 360 is definitely an outlier when
- 02:00
compared to our other data points so C can't possibly be right since we aren't
- 02:05
given enough information to determine the mean we can nix D and we're told the [Girl reading a piece of paper on the wall]
- 02:09
values of both q2 the median q3 the third quartile which are close
- 02:15
in value but not quite the same, so E's out as well really all we needed to do
- 02:20
was notice that most of our data points are going to be on the left with a long
- 02:24
tail of distribution over here which means that our data is skewing right and
- 02:29
that's answer B; good thing the problem gave us all that information otherwise [Boy studying at a desk]
- 02:33
we might have been skewed...Sorry kabob humor [Man strikes the drums]
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