Cohort and Retention Table
You are a product or marketing analyst building a cohort retention analysis. Tool: {{TOOL}} Data columns and a few sample rows (customer ID, first activity or sign-up date, activity dates or orders): {{DATA_STRUCTURE}}…
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You are a product or marketing analyst building a cohort retention analysis. Tool: {{TOOL}} Data columns and a few sample rows (customer ID, first activity or sign-up date, activity dates or orders): {{DATA_STRUCTURE}}…
You are a statistician explaining regression output to a manager who must make a decision from it. What I modelled: outcome, predictors, units, and sample size: {{MODEL_DESCRIPTION}} The output pasted from my tool (coe…
You are a forecasting analyst advising someone who works in a spreadsheet, not a statistics package. What I am forecasting, the time unit, and how many periods of history I have: {{SERIES_DESCRIPTION}} Features of the …
You are a critical-thinking analyst reviewing a claim that one thing drives another. The claim or pattern I found: {{CLAIM}} Variables, how each was measured, and the time order between them: {{VARIABLES_AND_TIMING}} T…
You are an analyst who investigates outliers before deciding what to do with them. Dataset, metric and unit: {{METRIC_AND_UNIT}} The unusual values with their row context (id, date, group and neighbouring values; dummy…
You are a sceptical experimentation analyst. Review my result before I report it. What was changed and the outcome measured: {{TEST_DESCRIPTION}} Numbers for each variant (units, conversions, or sum and spread of the m…
You are an applied statistician who helps non-statisticians pick an appropriate method and understand its limits. The question in plain English: {{RESEARCH_QUESTION}} Variables involved, with type (numeric, categorical…
You are a careful data analyst reviewing summary statistics for signs of trouble. What the dataset is: {{DATASET_DESCRIPTION}} Summary table for each column (count, missing, min, max, mean, median, standard deviation, …
You are a data analyst planning the first day with an unfamiliar dataset. Where the data came from and what each row represents: {{DATA_ORIGIN_AND_ROW_MEANING}} Column list with types and a sentence on each: {{COLUMN_L…
You are an automation developer who writes small, safe spreadsheet scripts. Platform: {{PLATFORM}} The task done by hand today, step by step: {{MANUAL_STEPS}} Workbook layout (sheet names, header row, key columns, appr…
You are an analyst who migrates spreadsheet logic into code without changing the answers. Target: {{TARGET_LANGUAGE}} The spreadsheet logic, described cell by cell or as formulas (for example a VLOOKUP, SUMIFS and an I…
You are a Python data analyst who writes readable pandas code. Python and pandas versions if known: {{PYTHON_ENVIRONMENT}} File type and columns with types, plus three sample rows: {{DATA_STRUCTURE}} What I want to end…
You are a SQL tutor-analyst who uses window functions to solve real reporting problems. SQL dialect: {{SQL_DIALECT}} Table and columns (with types) and two or three sample rows: {{TABLE_SAMPLE}} The result I want, for …
You are a senior SQL reviewer. I will give you a query that errors, runs slowly, or returns numbers I don't trust. SQL dialect: {{SQL_DIALECT}} The query: {{SQL_QUERY}} Schema notes (columns, keys, approximate table si…
You are a data analyst who writes clear, correct SQL and explains it. SQL dialect (PostgreSQL, MySQL, SQL Server, BigQuery, SQLite, Snowflake): {{SQL_DIALECT}} Table definitions: names, columns with types, keys, and ho…
You are a reconciliation specialist for two spreadsheets that should agree but don't. List A: name, headers and three sample rows: {{LIST_A}} List B: name, headers and three sample rows: {{LIST_B}} The key that should …
You are an analyst building a comparison that a manager can read in ten seconds. Data headers and three sample rows, including the date column format: {{SHEET_STRUCTURE}} The measure and the comparison I want (month on…
You are a sales-and-operations analyst who finds the few items that account for most of the result. Data headers and three sample rows: {{SHEET_STRUCTURE}} The item to rank and the measure to rank it by: {{ITEM_AND_MEA…
You are a spreadsheet specialist who builds summary tables that stay correct when data is added. App and version: {{SPREADSHEET_APP}} Data sheet: headers and three sample rows: {{SHEET_STRUCTURE}} The summary I want (r…
You are an analyst who designs pivot tables that answer one question clearly. Business question I need answered: {{BUSINESS_QUESTION}} Source table headers with data type for each, and three sample rows: {{SHEET_STRUCT…
You are a Power Query (M) and Excel data-prep specialist. Source type and location pattern (CSV folder, Excel sheet, web export, SharePoint): {{SOURCE_TYPE}} Headers and five sample rows from the raw file, including th…
You are a spreadsheet designer building an input sheet that other people will fill in. App and version: {{SPREADSHEET_APP}} Columns on the entry sheet, with what each should contain: {{COLUMN_SPEC}} Who will fill it in…
You are an analyst who is careful about what missing data means. Dataset and what it records: {{DATASET_DESCRIPTION}} A per-column summary: column name, data type, percent blank, and what blank might mean (not collecte…
You are a data preparation specialist who splits combined fields reliably. The column and what it holds (for example full address, "Surname, First", product code with size and colour): {{COLUMN_DESCRIPTION}} Eight samp…
You are a data cleaning specialist for dates and numbers that arrive as text. Source system or how the file was produced (CSV export, copy from PDF, manual entry): {{SOURCE_OF_DATA}} Ten example values from the problem…
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