StudyXY
RegisterLog in

Statistics: Correlation and Linear Regression

Study of correlation and linear regression in statistical analysis.

Caleb Patterson
Contributor
5.0
33
5 months ago
Preview (3 of 7 Pages)
100%
Purchase to unlock

Page 1

Statistics: Correlation and Linear Regression - Page 1 preview image

Loading page ...

Page1of7StatisticsDr S. TherianosCorrelationand Linear RegressionCorrelation:A technique used to decide whether there is a statistically significantlinearrelationship between the values of the dependent and independent variables.Regression:A statistical method used to describe the nature of the relationship betweenthe dependent and independent variables witha linear equation, called theRegressionLine.Association:A vague term used to describe the relationship between two variables.We shall investigate relationships between variables.If only two variables are involved the relationship issimple.For example, is there a relationship between a person’s age and his or her bloodpressure?If more than two variables are studied we have amultiple relationship.For example a student’s success in college depends on many factors such as the hoursdevoted to studying, the GPA, high school background, social and economic conditions.In this course we study onlysimple relationships.There are many types of relationships:Arelationshipispositiveif both variables increase or decrease at the same time.For example there is a positive relationship between a person’s height and weight.A relationship isnegativeifone variable increases and the other decreases, or viceversa.For example, for older people, as age increases, in general, agility decreases.Also, a relationship can belinearornonlinear.Our purpose is to answer the following questions statistically:1.Is there an association between the variables?Basically this means arethetwo variablesx and ysomehowrelated?2. If the variables are related, what is thetype or shapeof the relationship?

Page 2

Page 3

Preview Mode

This document has 7 pages. Sign in to access the full document!

Study Now!

XY-Copilot AI
Unlimited Access
Secure Payment
Instant Access
24/7 Support
Document Chat

Document Details

Subject
Statistics

Related Documents

View all
Solved Assignments

The Statistics of Inheritance

Explore how inheritance follows predictable patterns using Punnett squares and probability. This helps explain how traits pass from parents to offspring, aiding our understanding of genetics, variation, and evolution in species.

Class Notes

Estimation and Hypothesis Testing

Learn about Two-Way ANOVA, a statistical method to analyze the effects of two independent variables on one dependent variable. Understand main and interaction effects, assumptions, and how it differs from one-way ANOVA in factorial designs.

Solved Assignments

Experimental Designs Week 4 Solution

Solutions and explanations for experimental design concepts from Week 4.

Solved Assignments

Inferential Statistics Week 2 Solution

Solutions to inferential statistics problems from Week 2 coursework.

Solved Assignments

Normal Distribution - Amount of Sleep

Application of normal distribution in analyzing sleep data.

Solved Assignments

Lab Activity 5 Sampling Distributions

Practical exercise on sampling distributions and statistical inference.

Solved Assignments

Correlation and Confidence Intervals

Explores correlation coefficients, confidence intervals, and statistical reliability.

Solved Assignments

Hypothesis Testing � Comparing Two Groups

Examines hypothesis testing methods for comparing two groups.

Solved Assignments

Probability and Statistics Assignment

An assignment covering probability theory and statistical analysis concepts.

Solved Assignments

Two-Sample Hypothesis Tests

This document provides solutions for two-sample hypothesis testing problems.