Plotly + Pandas
Plotly + Pandas is for charts/tables. Matplotlib/Plotly draw graphs. pandas holds tables (DataFrame). In interviews, say: DataFrame = rows+columns, then plot one column.
Tiny mental example: marks = {"Asha": 90, "Ravi": 85} → bar chart. You don’t need a PNG on the theory page — know the pipeline: data → figure → show/save.
Plotly + Pandas — output — 87.5. DataFrame column mean — then you can plot df.
Exam tip
Pipeline in three words + one library name.