There are various ways to show your data to others. It is important how to organize and process data, but it is vital to show your data in a clear format so that your audience can get the idea right away. It is always a better idea to use present your data graphically using tables and charts.

Numerical Data

Categorical Data

Tables Histograms

Tables Pie Charts Bar Graphs Time Charts (Line Graphs)

Frequency Table

A tabulation of the values in a sample

Interval or group: division of data

Frequency: the count of occurrences of values

Relative Frequency Table

Relative frequency is the proportion of all given values in an interval.

Histogram

A graphical representation of the distribution of data or a frequency table

Stem-And-Leaf Diagram

Quantitative data (usually sorted) in a graphical format

Determine what the stems will represent and what the leaves will represent

Typically, the leaf contains the last digit of the number, and the stem contains all of the other digits.

Here is the example of the stem-and-leaf diagram.

The height of 10 students are like this in centimeters: 178, 159, 166, 175, 182, 162, 173, 175, 172, 178

In this example, the stem can be the first 2 digits and the leaf will be the last digit. Also, when you specify the leaf values, you need to specify the repeated values.

[Note] In most graphs, an independent variable goes on the horizontal axis (x-axis), and a dependent variable goes on the vertical axis (y-axis). But the bar graph is an exception. In it, the vertical axis holds the independent variable.