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data-analysis

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Staff picks for #data-analysis

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Staff pick · ChatGPT3 blanksA bar chart from a table, with the one thing it showsHere's a table: paste table Make a horizontal bar chart of value column by category column, sorted largest first, with each bar labelled with its value. Title the chart with the takeaway in plain words (what someone should notice), not the column names. Under the chart, write two sentences: the main thing it shows, and one number that stands out. If the data can't support a chart (too few rows, mixed units), say so instead of drawing one.
Staff pick · ChatGPT3 blanksSQL from a plain-English questionHere's my schema: paste CREATE TABLE statements Write a Postgres / MySQL / SQLite query that answers: question. Use CTEs instead of nested subqueries, name columns clearly and handle NULLs explicitly. After the query, explain in three bullet points how it works, and one thing that could make it slow on a large table, with the index that would fix it.

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