Chapter 2 · Section 5 practice

Interactive Visualisation

0 of 6 answered

These questions review the examples in the companion slides. Choose an answer, then check the explanation.

Question 1

In px.scatter(df, x="teaching", y="citations"), what do x and y name?

  • DataFrame columns
  • Row positions
  • Python package names
  • Two output files

Question 2

What should be checked before plotting a numeric column?

  • Only the chart colour
  • Whether its name is short
  • Whether every value is positive
  • Its meaning, numeric type, missing values and selected rows

Question 3

Which statement about Express and Graph Objects is correct?

  • Graph Objects fills missing data automatically
  • Express figures cannot be updated
  • Express produces figures that Graph Objects methods can refine
  • Express can draw only histograms

Question 4

What makes animated points comparable across years?

  • Removing the year column
  • Stable observation identities and fixed axis ranges
  • Random colours in each frame
  • Different scales in each frame

Question 5

How does add_trace place a trace in the second panel of one row?

  • add_trace(trace, row=1, col=2)
  • add_trace(trace, row=0, col=1)
  • set_index(2)
  • update_layout(axis=2)

Question 6

A chart displays missing-feature counts by month. What should its caption state?

  • A guaranteed profitable strategy
  • Only the colour scheme
  • That plotting proves data completeness
  • The sample, count definition and limitation