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Write down this problem on your READY RECALL SHEET. NUMBERS DON’T LIE . . . but do graphs? Which graph is deceiptful ? And why? WRITE IT DOWN. Go. ITEMS of BUSINESS. REWORK is due April 29/30, next TUES/WED. This must be in on-time in order to retake the test. - PowerPoint PPT Presentation
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Page 82 of your INB
Write down this problem on yourCOMMUNICATOR
Be 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. INDEPENDENT3 things you’ll see:
NO ASSOCIATIONNO DEPENDENCE
Hair length
Blin
k tim
e
Doesn’t matterwhat goes where.
ASSOCIATIONNO DEPENDENCE
Hand size
Foot
size
Doesn’t matterwhat goes where.
ASSOCIATIONDEPENDENCE
Dependent goes here.
Mat
h gr
ade
Time spent gaming
Can go
eith
er pl
ace.
Can go
eith
er pl
ace.
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-LINEARDoes 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 faraway from the points, it stillfollows 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
LINESOf
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
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