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  3. Introduction to Data Visualization with Julia

Exercise

Price deviations

In this exercise, you will focus on understanding the variability of product prices across different centers and dates. To accomplish this, you will calculate the standard deviation of prices for each product and compare them visually using a bar chart.

The necessary packages, DataFrames, Plots and Statistics, have already been imported for you. Also, the product DataFrame is readily available for your use.

Instructions 1/3

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  • Group the product DataFrame by Commodity.