Unit 1_Scatterplots and Line of Best Fit.notebook November 06, 2017
Line of Best Fit A line that comes closest to all the points on a scatter plot.
Our goal when drawing our line of best fit is to have about the same number of points on top as there are on the bottom
Trend line (line of best fit) a line that closely fits the data points in a scatter plot, used to make predictions
1 Unit 1_Scatterplots and Line of Best Fit.notebook November 06, 2017
Using Line of Best Fit to make predictions: 1. Determine if the information given is part of the independent or dependent variable. 2. Locate that information on the graph. 3. Follow that point to the line to determine the corresponding value.
Predict the number of runs the softball team would score if they had six hits.
2 Unit 1_Scatterplots and Line of Best Fit.notebook November 06, 2017
600 575 550 525 500 475 450 425
Calories 400 375 350 325 300 275 250
2 4 20 6 8 10 12 14 16 18 22 24 26 28 30 32 Fat
3 Unit 1_Scatterplots and Line of Best Fit.notebook November 06, 2017
Making an equation for our line of best fit...
Step 1: Make a scatter plot and draw a trend line Step 2: Pick 2 points on the line you drew Step 3: Make sure your line crosses the yaxis Step 4: Write an equation for the line
m = y2 y1 y=mx + b
x2 x1
Celebrity Scatter Plot
4 Unit 1_Scatterplots and Line of Best Fit.notebook November 06, 2017
Copy this table in your notes. There will be 20 people. Famous Estimated Actual Person Age Age 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Estimating Ages of Famous Personalities
Task: You will be seeing photos of famous people. As you see the photos, record the names or initials of each individual and your best estimate as to the person's age. If you do not know the person, take your best guess as to the age from observing the photo. I will then give you their actual ages and you will create and analyze a scatterplot of the information.
Ready....
5 Unit 1_Scatterplots and Line of Best Fit.notebook November 06, 2017
Taylor Lautner
Miley Cyrus
6 Unit 1_Scatterplots and Line of Best Fit.notebook November 06, 2017
Barack Obama
Lady Gaga
7 Unit 1_Scatterplots and Line of Best Fit.notebook November 06, 2017
Shia LeBeouf
Kristen Stewart
8 Unit 1_Scatterplots and Line of Best Fit.notebook November 06, 2017
Jake Gyllenhaal
Kim Kardashian
9 Unit 1_Scatterplots and Line of Best Fit.notebook November 06, 2017
Owen Wilson
Nick Jonas
10 Unit 1_Scatterplots and Line of Best Fit.notebook November 06, 2017
Pauly Perette
Justin Bieber
11 Unit 1_Scatterplots and Line of Best Fit.notebook November 06, 2017
Jennifer Lopez
Ashton Kutcher
12 Unit 1_Scatterplots and Line of Best Fit.notebook November 06, 2017
Leonardo DiCaprio
Jennifer Aniston
13 Unit 1_Scatterplots and Line of Best Fit.notebook November 06, 2017
Robert Pattinson
Selena Gomez
14 Unit 1_Scatterplots and Line of Best Fit.notebook November 06, 2017
Jaden Smith
Kirsten Dunst
15 Unit 1_Scatterplots and Line of Best Fit.notebook November 06, 2017
1. Based off of the data we collected, can we write a linear regression equation?
2. In your equation, what does the x represent and what does they represent?
3. Use your equation to predict the actual age of a person who you estimated to be 30. Show your work.
4. If someone's actual age was 40, what would you have estimated their age to be? Explain.
16 Unit 1_Scatterplots and Line of Best Fit.notebook November 06, 2017
17 Attachments
Scatterplot Assessment Jeopardy Review.notebook