The data set mentioned in Exercise 1 also includes these third grade verbal IQ observations for males: 117 103 121 112 120 132 113 117 132 149 125 131 136 107 108 113 136 114 and females 114 102 113 131 124 117 120 90 114 109 102 114 127 127 103 Prior to obtaining data, denote the male values by X1,..., Xm and the female values by Y1,., Yn. Suppose that the X;'s constitute a random sample from a distribution with mean u1 and standard deviation o1 and that the Y,'s form a random sample (independent of the X's) from another distribution with mean la and standard
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.
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