Statistics 101 CORRELATION Section 3.2.

Slides:



Advertisements
Similar presentations
AP Statistics Section 3.1B Correlation
Advertisements

Scatterplots and Correlation
Looking at data: relationships - Correlation IPS chapter 2.2 Copyright Brigitte Baldi 2005 ©
A P STATISTICS LESSON 3 – 2 CORRELATION.
2.4: Cautions about Regression and Correlation. Cautions: Regression & Correlation Correlation measures only linear association. Extrapolation often produces.
Example 1: page 161 #5 Example 2: page 160 #1 Explanatory Variable - Response Variable - independent variable dependent variable.
Section 3.2 Part 1 Statistics. Correlation r The correlation measures the direction and the strength of the linear relationship between two quantitative.
The Practice of Statistics, 5th Edition Starnes, Tabor, Yates, Moore Bedford Freeman Worth Publishers CHAPTER 3 Describing Relationships 3.1 Scatterplots.
The Practice of Statistics, 5th Edition Starnes, Tabor, Yates, Moore Bedford Freeman Worth Publishers CHAPTER 3 Describing Relationships 3.1 Scatterplots.
Lecture PowerPoint Slides Basic Practice of Statistics 7 th Edition.
Examining Bivariate Data Unit 3 – Statistics. Some Vocabulary Response aka Dependent Variable –Measures an outcome of a study Explanatory aka Independent.
Correlations: Relationship, Strength, & Direction Scatterplots are used to plot correlational data – It displays the extent that two variables are related.
Regression and Least Squares The need for a mathematical construct… Insert fig 3.8.
Chapter 4 Summary Scatter diagrams of data pairs (x, y) are useful in helping us determine visually if there is any relation between x and y values and,
4.2 Correlation The Correlation Coefficient r Properties of r 1.
Psy302 Quantitative Methods
Scatter Diagrams scatter plot scatter diagram A scatter plot is a graph that may be used to represent the relationship between two variables. Also referred.
We would expect the ENTER score to depend on the average number of hours of study per week. So we take the average hours of study as the independent.
3.2 Correlation. Correlation Measures direction and strength of the linear relationship in the scatterplot. Measures direction and strength of the linear.
Chapter 14 STA 200 Summer I Scatter Plots A scatter plot is a graph that shows the relationship between two quantitative variables measured on the.
Correlation  We can often see the strength of the relationship between two quantitative variables in a scatterplot, but be careful. The two figures here.
Chapter 6 Prediction, Residuals, Influence
Chapter 5 Correlation.
Examining Relationships
CHAPTER 3 Describing Relationships
MATH 2311 Section 5.1 & 5.2.
Two Quantitative Variables
CHAPTER 3 Describing Relationships
Scatter Plots.
IB Math SL 21A: Correlation.
Data Analysis and Statistical Software I ( ) Quarter: Autumn 02/03
Section 3.3 Regression Wisdom
AGENDA: Quiz # minutes Begin notes Section 3.1.
A P STATISTICS LESSON 3 – 2 CORRELATION.
The Linear Correlation Coefficient
Chapter 5 Correlation.
Investigation 4 Students will be able to identify correlations in data and calculate and interpret standard deviation.
Unit 4 Vocabulary.
Examining Relationships
The Least-Squares Line Introduction
Do Now Create a scatterplot following these directions
Section 1.4 Curve Fitting with Linear Models
CHAPTER 3 Describing Relationships
AP Statistics Section 3.2 Part 1 AP Statistics
11A Correlation, 11B Measuring Correlation
Chapter 3 Scatterplots and Correlation.
A P STATISTICS LESSON 3 – 2 CORRELATION.
Correlation.
CHAPTER 3 Describing Relationships
CHAPTER 3 Describing Relationships
AP Statistics October 1st, 2010 Mr. Calise
CHAPTER 3 Describing Relationships
CHAPTER 3 Describing Relationships
CHAPTER 3 Describing Relationships
CHAPTER 3 Describing Relationships
Math 243 Exam 2 Preparation.
Examining Relationships
3.3 Cautions Correlation and Regression Wisdom Correlation and regression describe ONLY LINEAR relationships Extrapolations (using data to.
Scatterplots, Association and Correlation
CHAPTER 3 Describing Relationships
CHAPTER 3 Describing Relationships
Exploring Relationships Between Variables
Correlation & Trend Lines
Section 11.1 Correlation.
Chapter 3 Examining Relationships
Plan for Today: Chapter 14: Describing Relationships: Scatterplots and Correlation.
Correlation Coefficient
Solution to Problem 2.25 DS-203 Fall 2007.
CHAPTER 3 Describing Relationships
3.2 Correlation Pg
Presentation transcript:

Statistics 101 CORRELATION Section 3.2

What is correlation? The direction and strength of the linear relationship between two quantitative variable. What are quantitative variables? What do you think direction implies? What do you think strength implies?

What does r mean? Does not distinguish between explanatory and response variable Variables are quantitative r does not change when we change units of measure Positive r indicates positive association Negative r indicates negative association -1 to 1 Strength of linear relationship Not resistant to outliers

Feedback: Privacy Policy Feedback
Do Not Sell My Personal Information
About project: SlidePlayer Terms of Service

© 2024 SlidePlayer.com. Inc. All rights reserved.