Statistics Definitions > Lowess Smoothing Lowess Smoothing: Overview LOWESS (Locally Weighted Scatterplot Smoothing), sometimes called LOESS (locally weighted smoothing), is a popular tool used in regression analysis that creates a smooth line through a timeplot or scatter plot to help…
Regression in Minitab: Step by Step & Video
Return to the main Minitab index > Regression in Minitab Watch the video or read the steps below: How to find Regression in Minitab Regression is fitting data to a line (Minitab can also perform other types of regression, like…
Adjusted R2 / Adjusted R-Squared: What is it used for?
Statistics Definitions > Adjusted r2 Watch the video or read the article below: Adjusted R2: Overview Adjusted R2 is a special form of R2, the coefficient of determination. R2 shows how well terms (data points) fit a curve or line.…
Scatter Plot in Excel: Easy Steps plus Video
Microsoft Excel for statistics > Scatter plot in Excel Scatter Plot in Excel: Overview A scatter plot is a type of graph that shows how two sets of data might be connected. When you plot a series of points on…
TI-89 Regression: Linear, Trigonometric & Exponential
Probability and Statistics > TI 89 > How to find linear regression on ti-89 Contents: TI-89 Regression (Linear). TI-89 Regression (Trigonometric). TI-89 Regression (Exponential). Quadratic Regression (opens in new window). 1. How to find linear regression on TI-89: Steps Watch…
How to Find Linear Regression Slope by Hand or Excel
Probability and Statistics > Regression Analysis > How to Find Linear Regression Slope How to Find Linear Regression Slope: Overview Remember from algebra, that the slope is the “m” in the formula y = mx + b. In the linear…
Find a Linear Regression Equation by Hand or in Excel
Probability and Statistics > Regression Analysis > Find a Linear Regression Equation Contents: How to Find a Linear Regression Equation: Overview. Find a Linear Regression Equation in Excel. Leverage in Linear Regression. TI83 Linear Regression. How to Find the Regression…
Linear Regression Test Value: How to Find it
Probability and Statistics > Regression Analysis > Linear Regression Test Value Linear Regression Test Value Linear regression test values are used in simple linear regression exactly the same way as test values (like the z-score or T statistic) are used…
Correlation Coefficients: Find Pearson’s Correlation Coefficient
Probability and Statistics > Regression Analysis > Pearson’s Correlation Coefficients (Linear Correlation Coefficient) Contents (Click to skip to the section): How to Find Pearson’s Correlation Coefficients. How to test a correlation coefficient. Meaning of the Linear Correlation Coefficient. Cramer’s V…
Construct a Scatter Plot in Easy Steps
Probability and Statistics > Regression Analysis > Construct a Scatter plot Construct a Scatter plot: Overview A scatter plot gives you a visual idea of what is happening with your data. Scatter plots are similar to line graphs. The only…