Post on 17-Jan-2016
Page 82 of your INB
Write down this problem on your
COMMUNICATORBe prepared to defend your answer
if you are called on.
Write down one example of each of the following:- 2 variables with a positive association- 2 variables with no association
Be prepared to share them with your partner & class.
Page XX of your INBi-can construct a line of best fit and
use it to make predictions.
ITEMS of BUSINESS
REWORK is due NEXT TIME.
Last day to retake Ch 11 test is Thursday April 30. Must have practice test & rework done to retake.
Ch 16 test will be on Tues/Wed May 4/5.SAGE Test will be on May 14/15 & 18/19. BE HERE.
VOCAB REVIEW
Take notes.You can use them
on the quiz.
DEPENDENT vs. INDEPENDENT
3 things you’ll see:
NO ASSOCIATIONNO DEPENDENCE
Hair length
Bli
nk
tim
e
Doesn’t matterwhat goes where.
ASSOCIATIONNO DEPENDENCE
Hand size
Foo
t si
ze
Doesn’t matterwhat goes where.
ASSOCIATIONDEPENDENCE
Dependent goes here.
Mat
h g
rad
e
Time spent gaming
Can
go
eith
er p
lace
.
Can
go
eith
er p
lace
.
ASSOCIATION vs. NO ASSOCIATION
Points seem to go in one direction.
Points have NO direction.
Association No association
Good for predictions. Good for NOTHING.y = mx + b
CLUSTERING vs. OUTLIERS
CLUSTERING: Points seem to fall within a defined space.
Loose clustering Tight clustering Perfect clustering
OUTLIERS: Points outside that defined space. They are often disregarded. Sad, but true.
POSITIVE vs. NEGATIVE association
Both are increasing.“UPHILL”
*They AGREE with each other!
POSITIVE NEGATIVEOne increases,
the other decreases.“DOWNHILL”
*They OPPOSE each other!
+
+-
+
LINEAR vs. NON-LINEAR
Follows a STRAIGHT line.
* Remember, “lines” in mathare straight.
LINEAR NON-LINEAR
Does NOT follow a straight line.y = mx + b
Have your homework out on your desk.
RE- Try this CHALLENGE question:
On the scatterplot below, should the point indicated be considered an outlier? Why or why not?
Although the outlier if far
away from the points, it still
follows the direction of the
other points.
i-can use a lineto predict the foot size of a person with a 30cm hand.
Get into your Groups
LINES
Of
BEST FIT
Pages XX of your INB
HOW TO: draw a line of best fit
FOLLOW ALONG
Day 1 – Integer operations, PEMDAS, evaluating16.2 Lines of Best Fit
i-can use a line of best fit to predict the foot size of a person with a 17cm hand.
17
25
≈ 25cm
HOW TO: draw a line of best fit
FOLLOW ALONG
Draw a Line of Best Fit for each graph.Then based on the slope & y-intercept, construct a possible equation of the line.
HOW TO: draw a line of best fit
FOLLOW ALONG
Draw a Line of Best Fit for each graph.Then based on the slope & y-intercept, construct a possible equation of the line.
Worksheet16.2
Lines of Best Fit