Graphical representation of ungrouped data:*1 pointHistogramFrequency PolygonLine GraphBar Graph

The graphical representation of ungrouped data can be done using several types of graphs. Here's a step-by-step guide on how to use each one:

1. Histogram:

   • First, determine the range of the data set.
   • Next, divide this range into equal intervals, these are your bins.
   • Count how many data points fall into each bin. This is the frequency.
   • Draw the bins on the x-axis and the frequency on the y-axis. Each bin is represented by a vertical bar. The height of the bar corresponds to its frequency.

2. Frequency Polygon:

   • Start by creating a frequency table for your data.
   • Plot the midpoints of each interval on the x-axis and the corresponding frequency on the y-axis.
   • Connect the points with straight lines.

3. Line Graph:

   • Plot each data point on a two-dimensional graph.
   • The x-axis represents the independent variable and the y-axis represents the dependent variable.
   • Connect the points with a line.

4. Bar Graph:

   • Each category of data is represented by a bar.
   • The length or height of the bar represents the quantity of the data.
   • The categories can be plotted on the x-axis and the quantities on the y-axis, or vice versa.

Remember, the choice of graph depends on the nature of your data and what you want to illustrate.