# Chart types

In Survalyzer NG, the following chart types can be used for analysis purposes:

Pie chart: It is a chart in the shape of a circle. This type is used to represent a distribution of certain data in a simple way. For this purpose, the circle is divided into sectors, whereby the size of a sector represents the quantity of a certain data item. The sectors of a pie chart are basically the different answer options that are provided for a question. For each answer option, the percentage of the total AND the number of times (in brackets) that a respondent selected that answer option are indicated.

• The total of the percentages of all sectors is 100.
• The Mathematics answer option, belonging to the blue segment, was selected by 3 out of a total of 21 respondents. This amounts to a percentage of 14%.
• The German answer option, belonging to the green segment, was selected by 2 out of a total of 21 respondents. This amounts to a percentage of 10%, etc.

Column chart: This type of chart consists of vertical bars. Each vertical bar in the chart represents one of the answer options from the selected survey question. The value axis on the left represents the quantity percentage. This type is used to show the changes in the data over a period of time.

• The total of the percentages of all vertical bars is 100.
• The Mathematics answer option, belonging to the first vertical bar (from left to right) was selected by 3 out of a total of 21 respondents. This amounts to a percentage of 14%.
• The German answer option, belonging to the second vertical bar (from left to right) was selected by 2 out of a total of 21 respondents. This amounts to a percentage of 10%, etc.

Horizontal bar chart: This type of chart consists of horizontal bars. Each horizontal bar in the chart represents one of the answer options from the selected survey question. The value axis at the bottom of the chart represents the quantity percentage (max. 100) of the answer options. This type is used to show the changes in the data over a period of time. This type of chart gives a good indication, when the survey question include many answer options.

• The total of the percentages of all horizontal bars is 100.
• The Mathematics answer option, belonging to the first horizontal bar (from top to bottom) was selected by 3 out of a total of 21 respondents. This amounts to a percentage of 14%.
• The German answer option, belonging to the second horizontal bar (from top to bottom) was selected by 2 out of a total of 21 respondents. This amounts to a percentage of 10%, etc.

Stacked bar chart: This type of chart is very useful for comparing the proportional share of each answer option in the overall number of answer options of the corresponding survey question. The total of all proportional shares is always 100%.

Updated on May 10, 2021