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Scatter Plots

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How do I create one with a graphing calculator? Coordinate Planes explored ... Sales scatter plot on page 162 with graphing calculator. Show me your graph ... – PowerPoint PPT presentation

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Title: Scatter Plots


1
Scatter Plots
  • How do I make a scatter plot?

2
Table of Contents
  • Coordinate Plane background
  • What is a scatter plot?
  • How do I interpret a scatter plot?
  • How do I create one on paper?
  • How do I create one with a graphing calculator?

3
Coordinate Planes explored
  • Formed by 2 real number lines that intersect at a
    right angle.
  • X-axis horizontal axis
  • y-axis vertical axis
  • Ordered pairs
  • identify points on the coordinate plane.
  • (x, y)

Origin (0,0)
4
What is a scatter plot?
Study Time Grades
  • Collection of ordered pairs
  • Shows relationship between 2 different sets of
    data
  • Shows what kind of relationship exists between
    the data

5
3 Types of Correlation
  • Positive - as one value goes up, the other goes
    up

6
3 Types of Correlation
  • Negative - as one value goes up, the other goes
    down

7
3 Types of Correlation
  • No correlation - as one value goes up, the other
    neither goes up or down

8
Create one on Paper
  • Make grid on graph paper
  • Label axes with data categories
  • Label intervals to fit data
  • Plot ordered pairs
  • Draw Line of best fit
  • Title

9
Your Turn
  • Complete Temperature and Latitude scatter plot on
    page 162

10
Create on Graphing Calculator
  • Turn STAT PLOT on (2nd Y)
  • Set WINDOW to fit data x and y values
  • Use multiples of 5 or 10 as you would on graph
    paper
  • Insert data into LIST1 LIST2 (from STAT menu gt
    EDIT)
  • You need the same number of items in each list!
  • Graph

11
Your Turn
  • Complete Archery Sales scatter plot on page 162
    with graphing calculator.
  • Show me your graph
  • Page 164, 19
  • Homework Page 164 165, 20 - 26
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