A marine biologist is investigating the maximum dive durations of two distinct killer whale (Orcinus orca) pods in the Pacific Northwest: Pod A (resident) and Pod B (transient). She tracks a sample of 15 whales from Pod A and 15 whales from Pod B, recording the maximum dive duration (in minutes) for each individual.

She compiles the data and calculates the median dive duration for each pod.

The results of the study are summarised in Table 1 below.

Table 1: Median Maximum Dive Duration (minutes)

Pod	Median Dive Duration (minutes)
Pod A (Resident)	11.4
Pod B (Transient)	18.6

Explain how the median dive duration for a pod is calculated.

She compiles the data and calculates the median dive duration for each pod.

The results of the study are summarised in Table 1 below.

Table 1: Median Maximum Dive Duration (minutes)

Pod	Median Dive Duration (minutes)
Pod A (Resident)	11.4
Pod B (Transient)	18.6

Explain how the median dive duration for a pod is calculated.

Data handling and analysis

Question 70

Table 1: Median Maximum Dive Duration (minutes)

Markscheme

Data handling and analysis

Question 70

Table 1: Median Maximum Dive Duration (minutes)

Markscheme

Data handling and analysis

Question 70

Table 1: Median Maximum Dive Duration (minutes)

Data handling and analysis Questions

Data handling and analysis

Question 70

Table 1: Median Maximum Dive Duration (minutes)

Data handling and analysis Questions