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Limin Zheng

Content & Data

Data analysis & visualization

Calculate agreed metrics and explain patterns with reproducible definitions.

Choose this when
Choose this to compute metrics and visualize findings; for data repair use Spreadsheet cleaning & validation.
Scope unit
A bounded KPI set, definitions and charts
Possible delivery format
Files, reports or packages
Prepare a brief →

You send · You receive

What to send

  • Readable data and column meanings
  • Questions, KPI definitions and calculation rules
  • Intended audience and chart/report format

Start by describing the materials you already have; missing details can be added when we agree the scope. Before work begins, we will confirm the materials, permissions and working conditions needed for your specific task.

Possible outputs

  • Metric tables, charts and explanations
  • Editable analysis or report when agreed
  • Formulas, assumptions and limitations

Key check

Audit key calculations, sample sizes, denominators and missing-value handling.

Verifiable acceptance · 3
  • Sample calculations reproduce metric values
  • Missing data and limits are stated
  • Axes, labels and units are clear and not misleading

Hypothetical brief & output structure

Illustration · hypothetical

Illustrative example — not a completed client order

The request

Analyze a six-month acquisition funnel and show where conversions changed.

Sample artifacts

  • funnel-analysis.xlsxcalculated metrics
  • charts.pdfcharts and commentary
  • assumptions.mddata limitations

File names are illustrative

Other tasks of this kind

  • Chart workout frequency and duration from six months of records, noting missing periods.
Output structure / test path

Example metric: signup rate = signups / visitors; chart monthly values and missing periods

Write a brief from this example →

Scope boundaries

Client supplies metric definitions; correlations are not presented as causal proof.

Not included by default

  • Unverified causal claims or forecasting guarantees
  • An entire BI system unless separately scoped
  • Domain certification of the analysis

What affects the quote

Number of KPIs, cleaning needed and reporting depth.

Actual project references

There is currently no public example shown specifically for this service. Whether I can take on the task, its scope and how the result will be checked will be confirmed after I understand your needs.

Start with a short note

Three answers are enough. I will reply with what else is needed and whether a diagnosis comes first. You get a quote before any work starts.

Prepare a brief →

Data analysis & visualization

Start with a short note

Three answers are enough. I will reply with what else is needed and whether a diagnosis comes first. You get a quote before any work starts.

What to send
  • Readable data and column meanings
  • Questions, KPI definitions and calculation rules
  • Intended audience and chart/report format
Illustration · hypothetical

Illustrative example — not a completed client order

The request

Analyze a six-month acquisition funnel and show where conversions changed.

Example inputs

  • funnel.csv and data dictionary
  • Definitions for visitor → signup → activation

To start, it helps to mention

  • What question should the analysis answer?
  • Which metrics matter and are their calculation rules documented?

Confirm before work begins: Field definitions, formulas, missing-data treatment and verification

Public/de-identified information only. Private access requires separate authorization.

Open email draft →

Preview the text
Services brief — D03 Data analysis & visualization

First contact does not require a complete specification. Unknown fields may be blank or marked unknown.

What do you want to end up with?


What do you already have?


When do you need it? Any budget range?

Select and copy the brief manually if scripting or clipboard access is unavailable.

Public email is a contact starting point. This site has no booking, payment or file-upload service. zhenglimin.design@gmail.com

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