Need to forecast values outside of the current data range? You can extrapolate the trend graphically by using Excel’s Trendline and Forecast feature. This article explains how to extrapolate a graph ...
Linear extrapolation is useful for estimating future values based on historical trends, whether you're analyzing business indicators or projecting future growth. From using simple formulas to ...
Polynomial interpolation is a useful approach when working with non linear data and trying to estimate values between known data points. Excel offers built in features that will help you interpolate ...
Trying to calculate an intermediate value between known data points on a two dimensional grid? You’ll need to perform bilinear interpolation. In this article, you will learn about bilinear ...
In the real world, relationships are not always linear. For instance, treasury yields, the spread of infectious disease, etc., often exhibit a non linear trend. This article explores non linear ...
While working with data in Excel, you will frequently need to estimate values between two known points. Interpolation is useful in this situation. This article explores linear interpolation and uses ...
A confidence interval helps you understand the accuracy of your data estimates beyond simple averages. In this tutorial, you’ll understand what a confidence interval is and how to calculate ...
When constructing an investment portfolio, reducing risk is as important as increasing returns. The minimum variance portfolio offers the least possible risk for a certain level of expected return. ...
Is multicollinearity misleading your regression results? The Variance Inflation Factor (VIF) helps you determine the degree of multicollinearity between independent variables and interpret the ...
Managing business performance requires comparing budgeted and actual results. This article explains budget vs actual variance and teaches how to calculate the budget vs. actual variance formula in ...
A correlation graph, also known as a scatter plot, is a great way to visualize the relationship between two variables. A correlation graph can be made quickly with Excel’s charting feature, and this ...
A correlation matrix is the ideal tool for examining data containing multiple variables and determining their relationships. This tutorial explores how to make correlation matrix in Excel with built ...