In Graphical Approach to a Simple Physics Problem I discussed my daughter’s physics homework. The problem was to determine the relationships between how long it takes water to drain from a hole in the bottom of a bucket, the diameter of this hole, and the initial height of water in the bucket. Given this relationship, the time to drain an initial height of 20 through a hole of diameter 4 was to be computed. The data is shown in this table.

The first step is to plot the data using XY charts. The charts below show time to drain vs height for various hole sizes and time to drain vs hole size for various diameters. [Read more…] about Regression Approach to a Simple Physics Problem