Distance-Time Graphs
Outliers and Predictions
Correlations
Reading & Creating Scatterplots
Line of Best Fit
100
What is happening from point B to point C?
http://www.antonine-education.com/Image_library/GCSE/distance_time.JPG
Complete stop
100
What is an outlier?
What is a point that is distant (skewed) from the rest of the data?
100
What type of correlation does this graph show?
What is positive?
100
What are two points on the line of best fit?
What is (16,300) and (22,500)
100
How do you determine where to place the line of best fit?
There should be close to an equal number of points above and below the line.
200
Does this person return home?
http://www.aplusphysics.com/courses/honors/kinematics/images/Cricket_xt_Graph.jpg
Yes
200
Which point is the outlier?
What is approximately (30, 6000)?
200
What type of correlation is shown in the scatter plot?
What is negative?
200
What is the correlation of this graph? Will the slope be positive or negative?
This graph shows a negative correlation and a negative slope.
200
Two points on the line of best fit are (4, 85) and (2, 70).
Find the slope for the line of best fit using these points.
15/2
300
Draw a distance-time graph where Shawn leaves home for a walk, stops at a bus stop for a minute, and then runs back home.
Teacher's Decision
300
Based on the scatter plot how many CDs would be sold for 2 jars of jam?
What is about 15 CDs?
300
What type of correlation is shown?
What is no correlation?
300
How do you make predictions using a scatter plot?
1) Draw a line of best fit.
2) Determine the slope and y-intercept.
3) Write an equation and use it to make a prediction.
300
What are two points on the line of best fit?
Two points on the line of best fit are: (4, 1) and (3, 2)
400
Answer the following question:
https://easingthehurrysyndrome.files.wordpress.com/2014/08/screen-shot-2014-08-15-at-11-55-26-am.png
C
400
If a person is 45 years old, based on the scatter plot, what should they expect their income to be?
What is about 45,000.
400
Describe what a positive correlation means for data.
When one variable increases the other variable will also increase.
400
What do we call the point that is not close to any of the others? http://i61.tinypic.com/2qaq0t3.png
Outlier
400
When finding the equation of the line, how do we find the slope if there are no points on the line?
Make points on the line that go through the corners
500
Draw a graph that matches the following scenario:
Mr. Jackson leaves from home driving to school. He stops in Scottsville to get gas. After gas, he drives to McDonalds to get him a biscuit and gravy. After he leaves McDonalds, he goes on to school.
Teacher Decision
500
This question has nothing to do with an outlier, so the joke is on you! Find the equation of the line given these two points:
(0,60) (2,85)
y=12.5x+60
500
Describe this graphs correlation in full detail.
https://www.everythingmaths.co.za/maths/grade-12/09-statistics/images/3477aa0116320edb6b9477f7b33f734b.png
Strong Negative Correlation
500
Use the table to create a scatterplot and draw a line of best fit.
http://math.illinoisstate.edu/day/courses/old/312/session1106.gif
Teacher's Decision
500
The equation of the line for a graph comparing age and height (ft) is y=0.25x+1. How tall would someone that is 20 years old be?
6 feet tall