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Core - Statistics

    Chapter 11

    Correlation and Regression

    11.1 : Correlation01:09

    11.1 : Correlation

    In statistics, two variables are said to be correlated if the values of one variable are associated with the other variable. Depending on the relationship ...

    11.6K views
    11.2 : Coefficient of Correlation01:12

    11.2 : Coefficient of Correlation

    The correlation coefficient, r, developed by Karl Pearson in the early 1900s, is numerical and provides a measure of strength and direction of the linear ...

    6.0K views
    11.3 : Calculating and Interpreting the Linear Correlation Coefficient01:11

    11.3 : Calculating and Interpreting the Linear Correlation Coefficient

    The correlation coefficient, r, developed by Karl Pearson in the early 1900s, is numerical and provides a measure of strength and direction of the linear ...

    5.9K views
    11.4 : Regression Analysis01:11

    11.4 : Regression Analysis

    Regression analysis is a statistical tool that describes a mathematical relationship between a dependent variable and one or more independent variables. ...

    5.6K views
    11.5 : Outliers and Influential Points01:08

    11.5 : Outliers and Influential Points

    An outlier is an observation of data that does not fit the rest of the data. It is sometimes called an extreme value. When you graph an outlier, it will ...

    4.0K views
    11.6 : Residuals and Least-Squares Property01:11

    11.6 : Residuals and Least-Squares Property

    The vertical distance between the actual value of y and the estimated value of y. In other words, it measures the vertical distance between the actual ...

    7.3K views
    11.7 : Residual Plots01:07

    11.7 : Residual Plots

    A residual plot is a statistical representation of data used to analyze correlation and regression results. It helps verify the requirements for drawing ...

    4.5K views
    11.8 : Variation01:19

    11.8 : Variation

    An important characteristic of any set of data is the variation in the data. In some data sets, the data values are concentrated closely near the mean; in ...

    6.7K views
    11.9 : Prediction Intervals01:03

    11.9 : Prediction Intervals

    The interval estimate of any variable is known as the prediction interval. It helps decide if a point estimate is dependable. However, the point estimate ...

    2.2K views
    11.10 : Multiple Regression01:25

    11.10 : Multiple Regression

    Multiple regression assesses a linear relationship between one response or dependent variable and two or more independent variables. It has many practical ...

    2.9K views
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