Question: Which time series graphs represents the percentage change in the number of chronic patients (cases) in a major hospital over the years? The data is given as:
Year
1999
2000
2001
2002
2003
2004
Chronic patients (%)
2.3%
2.4%
1.8%
1.9%
2.0%
1.7%
A ) both Graph 1 and Graph 2 B ) Graph 2 C ) Graph 1 D ) neither Graph 1 nor Graph 2
Steps to derive
1 A time series graph represents data that occur over a specific period of time.
2 Represent time (years) on x-axis and the percentage of chronic patients on y-axis.
3 Plot the data and join the corresponding points with straight line segments as shown.
4 So, Graph 1 resembles the time series graph for the given data.
