DP Biology (first assessment 2025)

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Question 22M.2.SL.TZ2.3b

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Date May 2022 Marks available [Maximum mark: 1] Reference code 22M.2.SL.TZ2.3b
Level SL Paper 2 Time zone TZ2
Command term Calculate Question number b Adapted from N/A
b.
[Maximum mark: 1]
22M.2.SL.TZ2.3b
(b)

To calculate chi-squared, expected values must first be calculated. Assuming that there is no association between the two species, calculate the expected number of quadrats in which both species would be present, showing your working.

 

 

 

 

 

[1]

Markscheme
  1. 70 × 55150 ;
  2. 25.7;

Award [1] for proper values chosen/equation or [1] for answer.

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