Enter or paste your values to calculate weighted average with straightforward statistical output.
Inputs
This topic also has a deeper guide and a printable reference pack, so you can move from the live answer into the method, assumptions, and worked examples without leaving the topic cluster.
A fuller guide to mean, median, mode, range, and weighted average, focused on what each measure notices, what it ignores, and why the right summary depends on the shape of the data.
A fuller guide to linear interpolation, centred on when a straight-line estimate is reasonable, how to express the estimate honestly, and when extrapolation becomes risky.
Use this page when you need a quick weighted average result from a dataset, probability setup, or interpolation problem.
The result depends entirely on the values and assumptions you enter, so check the dataset carefully before drawing conclusions from the output.
Measure how widely a dataset spreads around its average by calculating the standard deviation.
Calculate how far a value sits from the dataset mean in standard-deviation units.
Use the Linear Interpolation Calculator to calculate linear interpolation from your own dataset with practical output and sensible validation.
Use the Combinations Calculator to calculate combinations from your own dataset with practical output and sensible validation.