Number of red blood cells per mm of blood in the human body, The procedure was as follows:
A sample of 50 men and 50 women were used.
The red blood cell count was first taken at sea level.
They were then taken to an altitude of 2000 metres above sea level.
The red blood cell count was taken again after staying 3 weeks at the high
altitude.
The results of the investigation are recorded in the table below:
A titude
Average number of red blood cells
per mm of blood
Men
Women
5 million
4,5 million
6,2 million
5,8 million
At sea level
At 2000 metres above sea level
3.2.1
On the same system of axes, draw a bar graph to represent the
average number of red blood cells per mm of blood in men and
women at sea level and at 2000 metres above sea level,​