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data Intermediate

Data Quality Audit Checklist for New Dataset

Run a data quality audit on the dataset described below. Check for: missing valu...

#data #quality #audit
👁 3 views
excel Intermediate

Excel: Rebuild a Pivot That Lies to Stakeholders

Look at this pivot table setup: [PASTE COLUMNS, FILTERS, AND VALUES]. Tell me wh...

#excel #pivot-tables #analysis
👁 3 views
excel Intermediate

Clean up a sheet where dates are stored in five different formats

I inherited a spreadsheet where the 'Date' column has dates entered as '3/5/26',...

#excel #data cleaning #dates
👁 3 views
legal Intermediate

Figure out which privacy regulations actually apply to a small business

I run a small business. I keep getting told I 'need to be GDPR compliant' and 'C...

#legal #privacy #compliance
👁 3 views
excel Advanced

Write a VBA macro that does one boring task perfectly instead of ten things badly

I want to automate a small, repetitive Excel task with VBA. The task is: [DESCRI...

#excel #vba #macro
👁 3 views
data Intermediate

Clean a messy dataset without losing the rows that actually mattered

I have a dataset with [N] rows and [LIST PROBLEMS: missing values, duplicates, m...

#data #cleaning #preprocessing
👁 3 views
legal Intermediate

Write a privacy notice users might actually read

Write a user-facing privacy notice for [PRODUCT]. I'll separately have lawyers w...

#legal #privacy #transparency
👁 3 views
data Intermediate

Fix a column where 30% of values are 'kind of right but not parseable'

I have a column in a dataset that's supposed to be a phone number, date, or addr...

#data #cleaning #etl
👁 3 views
legal Advanced

Figure out if a new data flow needs a privacy review or just a note in the doc

We're about to start collecting [type of data] from [type of user] for [purpose]...

#legal #compliance #privacy
👁 3 views
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excel Intermediate

Detect mixed date formats in one column and pick the safest fix

Act as a spreadsheet auditor. I will paste 20 cells from a date column that came...

#dates #data cleaning #DATEVALUE
👁 3 views
data Beginner

Pick the right chart when you can't decide between a bar and a line

I want to show how 4 product lines have grown over 12 months. I keep flip-floppi...

#charts #visualization #chart selection
👁 3 views
data Advanced

Rewrite a slow correlated subquery as a window function

I have a query with a correlated subquery that runs once per row to find each cu...

#SQL #window functions #query optimization
👁 3 views
excel Advanced

Build a Cohort Retention Heatmap Workbook in Excel

Act as a senior analytics engineer. I will paste a list of user signup events wi...

#cohort #retention #heatmap
👁 3 views
data Intermediate

Build a SQL Style Guide That Survives a Growing Team

Act as a data platform tech lead. Write me a SQL style guide tailored to a 10-pe...

#sql #style-guide #dbt
👁 3 views
data Intermediate

Build a one-glance metrics dashboard for a non-technical CEO

Help me design a single-screen weekly metrics dashboard my CEO will actually rea...

#data #dashboards #metrics
👁 3 views
data Intermediate

Sanity-check a dataset in 30 minutes before you build anything on top of it

I just got handed a dataset I'm going to use for [analysis / model / dashboard]....

#data #sanity-check #eda
👁 3 views
data Advanced

Write a SQL query that returns the right answer when the data has duplicates

I'm writing a SQL query against tables [paste schemas, especially the join keys]...

#sql #joins #duplicates
👁 3 views
education intermediate

Run a parent-teacher conference that produces a behavior change, not a list of grievances

Act as a veteran teacher coaching a colleague before a difficult parent-teacher ...

#education #parent-conference #classroom-management
👁 3 views
coding Intermediate

Untangle a circular import that the codebase has been living with for years

Act as a refactoring lead. There's a circular import between two modules that th...

#refactoring #imports #modules
👁 3 views
data Advanced

Decide whether an experiment result is real, lucky, or a measurement artifact

You're an experimentation lead. I ran an A/B test, the headline metric moved 4.2...

#experimentation #ab-testing #significance
👁 3 views
data Beginner

Decide which chart actually fits the point you are making

Act as a data visualization expert. I will tell you the comparison or trend I wa...

#visualization #charts #communication
👁 3 views
data Intermediate

Sanity-check a dataset before you trust a single number from it

You're a careful data analyst. Before I build anything on this dataset, give me ...

#data-quality #validation #checklist
👁 3 views
data intermediate

Write SQL Queries from a Question

Act as a SQL expert. My tables are: [describe tables and key columns]. Write a S...

#data #sql #queries
👁 3 views
data beginner

Design a Data Collection Survey

Act as a research methodologist. Design a survey to measure [goal, e.g., custome...

#data #survey #research
👁 3 views
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