Question

The following table shows the number of patients discharged from a hospital with diagnosis in different years:*

| Years | 2002 | 2003 | 2004 | 2005 | 2006 |
| Number of Patients | 150 | 170 | 195 | 225 | 230 |

Represent the information by a graph.

Answer 1

Here we know, year is an independent variable and the number of patients is a dependent variable. So let us take years on the x-axis and the number of patients on the y-axis.

Let us choose the following scale:

On x-axis: 2 cm = 1 year

On y-axis: 1 cm = 10 patients

Let us assume that on the x-axis, origin (O) represents 2001 and on the y-axis, origin (O) represents 120, i.e. O (2001, 120).

Now, let us plot (2002, 150), (2003, 170), (2004, 195), (2005, 225), (2006, 230). These points are joined to get the graph representing the given information as shown in the figure below.