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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 4.1 Exploring Data 196 Views
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Description:
AP Statistics 4.1 Exploring Data. A least-squares regression line is one that fits the data so that...what?
Transcript
- 00:00
Thank you We sneak and here's your shmoop toos your
- 00:05
brought to you by least squares which is a really
- 00:08
depressing outcome If you're playing a fellow a least squares
- 00:13
regression line is one that fits the data so that
- 00:17
what And here the pendulum Already So we've basically got
Full Transcript
- 00:23
another definition video on our hands here least squares regression
- 00:28
What is it Why do we need it And well
- 00:30
who really cares Well some of us do believe anyway
- 00:33
this question just wants to know if we understand the
- 00:36
point of the least squares regression well we always want
- 00:40
the sum of the squares of the deviations to be
- 00:42
a small as possible so that the line describing that
- 00:45
data representatives is close to perfect as we can get
- 00:48
it least squares regression line is intended to do just
- 00:52
that to minimize the sum of the square deviations and
- 00:55
by doing so provide a best pit summary of the
- 00:57
relationship between our two variables It's something like a tailor
- 01:01
in that respect except it doesn't have to go around
- 01:03
measuring the deviations in scenes or so yeah this is
- 01:08
kind of one of those either you know or you
- 01:10
don't problems And in this case if you know it
- 01:12
you'll pick and through deep This is one of the
- 01:14
few times we fully endorsed regressing long as it's here 00:01:18.972 --> [endTime] and not in the playground
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