DP Biology (first assessment 2025)

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Question 23M.2.SL.TZ1.f

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Date May 2023 Marks available [Maximum mark: 2] Reference code 23M.2.SL.TZ1.f
Level SL Paper 2 Time zone TZ1
Command term Suggest Question number f Adapted from N/A
f.
[Maximum mark: 2]
23M.2.SL.TZ1.f

Suggest two hypotheses to account for the relationship between the mean number of steps per day and the proportion of people who are obese.

 

Hypothesis 1: ...........................................................................................................

...............................................................................................................................

 

Hypothesis 2: ...........................................................................................................

...............................................................................................................................

[2]

Markscheme

(any order)

  1. obesity causes people to be less active/take fewer steps;
  2. people who are less active/take fewer steps (are more likely to) become obese;
  3. People who are not obese tend to have healthier habits, including walking more;

 

Accept hypothesis and a null hypothesis for the two.

Syllabus sections