Data recording, analysis and presentation

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Question 254

Red Squirrel Behavioural Study

A wildlife biologist conducted an observational study on the foraging habits and microhabitat preferences of red squirrels (Sciurus vulgaris) in a pine forest reserve. Over a three-month period, the biologist recorded several metrics for a cohort of squirrels. Some of the gathered data is summarised in the tables below.

Table 1: Primary Foraging Location

Did the squirrel forage on the forest floor?
'yes'	'no'
165	75

Table 2: Nesting Sites by Forest Zone

Did the squirrel build its drey in a coniferous tree?
	'yes'	'no'
North Zone	85	35
South Zone	60	40

Table 3: Main Source of Foraged Food

Main food source	Number of sightings
Pine cones	90
Acorns	45
Fungi	30
Tree bark	15
Berries	25
Insects	35

What is the ratio of squirrels that forage on the forest floor to those that do not? Present your answer in its simplest form and show your workings.

[2]

Red Squirrel Behavioural Study

Table 1: Primary Foraging Location

Did the squirrel forage on the forest floor?
'yes'	'no'
165	75

Table 2: Nesting Sites by Forest Zone

Did the squirrel build its drey in a coniferous tree?
	'yes'	'no'
North Zone	85	35
South Zone	60	40

Table 3: Main Source of Foraged Food

Main food source	Number of sightings
Pine cones	90
Acorns	45
Fungi	30
Tree bark	15
Berries	25
Insects	35

Data recording, analysis and presentation

Question 254

Red Squirrel Behavioural Study

Table 1: Primary Foraging Location

Table 2: Nesting Sites by Forest Zone

Table 3: Main Source of Foraged Food

Markscheme

Data recording, analysis and presentation

Question 254

Red Squirrel Behavioural Study

Table 1: Primary Foraging Location

Table 2: Nesting Sites by Forest Zone

Table 3: Main Source of Foraged Food

Markscheme

Data recording, analysis and presentation

Question 254

Red Squirrel Behavioural Study

Table 1: Primary Foraging Location

Table 2: Nesting Sites by Forest Zone

Table 3: Main Source of Foraged Food

Data recording, analysis and presentation Questions

Data recording, analysis and presentation

Question 254

Red Squirrel Behavioural Study

Table 1: Primary Foraging Location

Table 2: Nesting Sites by Forest Zone

Table 3: Main Source of Foraged Food

Data recording, analysis and presentation Questions