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Sample problems 3: objects and arrays

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Aannalabrozzi
Last edited Feb 27, 2018
Created on Feb 27, 2018

This example presents four JavaScript practice problems focused on working with objects and arrays, using a small dataset of U.S. states with their names, abbreviations, and populations. The page displays a title and instructions, but all computation happens in the browser’s developer console. Problem 1 uses `d3.mean()` to calculate and log the average population, while Problem 2 attempts the same calculation manually using `forEach()`, though the code’s logic is flawed. The visualization relies solely on D3 v4 for the mean function, with no SVG or graphical output.

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