A school psychologist conducted an intelligence assessment on a group of 75 children from a rural school. She ranked the scores of the intelligence test from the lowest to the highest (first, second, etc.) and examine the relationship
Correlation
Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.
Linear Correlation
A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related.
Regression Analysis
Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as predictors. Regression analysis is one of the methods to find the trends in data. The independent variable used in Regression analysis is named Predictor variable. It offers data of an associated dependent variable regarding a particular outcome.
A school psychologist conducted an intelligence assessment on a group of 75 children from a rural school. She ranked the scores of the intelligence test from the lowest to the highest (first, second, etc.) and examine the relationship of these scores with the student’s grades (academic performance). Since intelligence scores were ranked, which statistic should the psychologist use to examine the relationship between intelligence and academic performance?
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