Petri Dish

Two bacteria cultures, A and B, were set up in two different dishes, each covering 50% of its dish. Over 20 days, bacteria A's percentage of coverage increased to 70% and bacteria B's percentage of coverage reduced to 40%:

Petri Dish

Which of the two bacterium's growth correlates more linearly with the number of days passed?

Approximately, what is the Pearson correlation coefficient of bacteria B's coverage and the number of days passed?

If, after 20 days, bacteria A's coverage starts to correlate less with its linear trend line, what can we say about the value of its Pearson correlation coefficient?


  • AI-resistant
  • Data Science
  • Correlation
  • Public
  • Easy


Difficulty: Easy

Duration: 5 min

Score Distribution

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