After a floor plan makeover shows really bad floor plan choices tin distort the story, the adjacent mobility is which floor plan to usage successful the first place. In interviews, this is simply a favourite because the reply is not astir naming a floor plan from memory; it is astir tying the floor plan prime to the analytical question. This guideline shows the mobility type, champion chart, erstwhile to usage it, erstwhile to debar it, and an Indian example.
- Interview Favourite: "What floor plan would you usage for X?" - ever necktie your floor plan prime to the analytical question.
- For Comparison (few categories), usage Vertical aliases Horizontal Bar to comparison 3-8 discrete categories; debar galore categories (>10).
- For Trend complete Time, usage Line Chart for continuous clip series, patterns, seasonality; debar categorical X-axis.
- For Distribution, usage Histogram / Box Plot for 1 adaptable and Box Plot / Violin Plot to comparison distributions of 2-5 groups.
- For Relationship (2 variables), usage Scatter Plot for correlation, clusters, outliers; debar excessively galore points (overplotting).
- For Geographic Data, usage Choropleth Map / Bubble Map for location variation, geographic patterns; debar precise worth comparison.
- For Funnel / Conversion and Flow betwixt Categories, usage Funnel Chart / Waterfall for step-by-step conversion aliases alteration and Sankey Diagram to show travel quantities betwixt states.
The Big Picture: Match the Chart to the Question
Chart action starts pinch the mobility type. Once the mobility is clear, take the champion chart, explicate erstwhile to usage it, and telephone retired the debar erstwhile condition.
Always necktie your floor plan prime to the analytical question.
Comparison Questions
For Comparison (few categories), usage a Vertical aliases Horizontal Bar floor plan erstwhile you request to comparison 3-8 discrete categories. Avoid it erstwhile location are galore categories (>10), specified arsenic erstwhile comparing GMV crossed 5 e-commerce platforms.
For Comparison (many categories), usage a Ranked Horizontal Bar chart. It helps you benignant and publication agelong labels easily, specified arsenic gross by 20 merchandise sub-categories; debar it erstwhile location are fewer categories.
Trend and Distribution Questions
For Trend complete Time, usage a Line Chart erstwhile the mobility involves a continuous clip series, patterns, aliases seasonality. Avoid it erstwhile the X-axis is categorical, specified arsenic monthly UPI transaction measurement 2021-2025.
For Distribution (one variable), usage Histogram / Box Plot erstwhile the extremity is to show spread, shape, outliers, and percentiles. For example, distribution of Zomato transportation times is simply a one-variable distribution question; debar this erstwhile comparing crossed groups simultaneously.
For Distribution (comparison), usage Box Plot / Violin Plot to comparison distributions of 2-5 groups. For example, transportation time: Bengaluru vs Mumbai vs Delhi is simply a distribution comparison; debar this floor plan prime for a azygous variable.
Part of Whole, Relationship, and Geographic Questions
For Part of Whole (few parts), usage Stacked Bar / Waffle Chart to show creation that adds to 100%. Avoid it erstwhile location are galore mini categories, specified arsenic gross mix: Direct / Channel / Partner.
For Relationship (2 variables), usage Scatter Plot for correlation, clusters, and outliers. Avoid it erstwhile location are excessively galore points (overplotting), specified arsenic advertisement walk vs conversion complaint by campaign.
For Geographic Data, usage Choropleth Map / Bubble Map to show location variety and geographic patterns. Avoid it for precise worth comparison, specified arsenic state-wise NPS scores for an security company.
Funnel, Conversion, and Flow Questions
For Funnel / Conversion, usage Funnel Chart / Waterfall erstwhile the mobility is astir step-by-step conversion aliases change. Avoid it for non-sequential data, specified arsenic checkout funnel: Cart → Address → Pay → Confirm.
For Flow betwixt Categories, usage Sankey Diagram to show travel quantities betwixt states. Avoid it for elemental comparisons, specified arsenic personification journey: Landing page → characteristic → purchase.
Zomato Example: Distribution vs Distribution Comparison
If the analytical mobility is the distribution of Zomato transportation times, the mobility type is Distribution (one variable). The champion floor plan is Histogram / Box Plot because it shows spread, shape, outliers, and percentiles.
If the mobility changes to transportation time: Bengaluru vs Mumbai vs Delhi, the mobility type becomes Distribution (comparison). The champion floor plan becomes Box Plot / Violin Plot because it compares distributions of 2-5 groups.
Conclusion
The champion floor plan is the 1 that matches the analytical question: comparison, trend, distribution, portion of whole, relationship, geography, funnel, aliases flow. In interviews, authorities the mobility type first, past sanction the chart, erstwhile to usage it, and erstwhile to debar it.
The astir communal correction is choosing a floor plan earlier naming the analytical question. This costs points because the interviewer is looking for the nexus betwixt mobility type, champion chart, erstwhile to usage it, and erstwhile to debar it.
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