Tag: Data Analysis
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Pandas Essentials for Data Analysts: DataFrames, Filtering and Group By (Data Analyst Series, Part 15)
The Python library that reads a file too big for a spreadsheet and answers in a line. A beginner walkthrough of DataFrames, filtering, groupby and missing data in pandas 3.0.
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Choosing the Right Chart and Avoiding the Ones That Mislead (Data Analyst Series, Part 13)
The chart you pick decides what people believe. Here is how to match bar, line, pie and scatter to your question, and how to spot the truncated axis and dual-axis tricks before they reach your slide.
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Correlation vs Causation: The Traps Between Two Columns (Data Analyst Series, Part 12)
Two columns move together on a chart and someone declares one drives the other. Here is how to tell correlation from causation, spot the confounder, and avoid Simpson’s paradox before it reaches your slide deck.
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Statistics a Data Analyst Actually Uses (Data Analyst Series, Part 11)
The working statistics an analyst uses daily: mean versus median, the standard deviation, the normal curve and its 68, 95, 99.7 rule, percentiles, and the sampling ideas behind margins of error and significance.
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Exploratory Data Analysis: Finding the Story in Your Data (Data Analyst Series, Part 10)
Exploratory data analysis is the poke-around phase where a clean table turns into a story. Learn to summarise, read distributions, spot outliers and find relationships before you report anything.
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How to Think in Data: Questions, Metrics and Hypotheses (Data Analyst Series, Part 3)
Analysis starts with a sharp question, not a spreadsheet. Here is how to turn a vague request into a clear question, the right metric, and a hypothesis the data can actually test.
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About the Author
Dr Pranay Jha
Dr. Pranay Jha is a Cloud and AI Consultant with 18+ years of experience in hybrid cloud, virtualization, and enterprise infrastructure transformation. He specializes in VMware technologies, multi-cloud strategy, and Generative AI solutions. He holds a PhD in Computer Applications with research focused on Cloud and AI, has published multiple research papers, and has been a VMware vExpert since 2016 and a VMUG Community Leader.
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