# Sentiment Index

## 😁 What is a sentiment index ?

The sentiment index will give you insights in unstructured text entered by your respondents.

For example if your question has a field Comment and your respondent answered "I didn't like your service" ngSurvey will analyze that text and rate it as a negative sentiment.

Unstructured text entered by your respondents can be evaluated to be positive, neutral negative or mixed [sentiments](https://docs.ngsurvey.com/form-management/reports/text-reports/sentiment-analysis) when they have both positive and negative insights.

## 📈 Sentiment index  chart

Each bar is the total of respondent text answers that were found matching that sentiment category. 

![](https://1025048312-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M8fLhS0bmfBRyq0HdUm%2F-MBYNrBR2LzpTwrYAUPx%2F-MBYOQDo_ozl4GgCGMjS%2Fimage.png?alt=media\&token=0300558a-0cb4-4f62-9ec2-2a6f79b235b9)

The sentiment index on the left ranges from -10 (very negative) to +10 (very positive). and is surrounded by the sentiment categories based on their answers percentage.

{% hint style="warning" %}
Only text based answer with enabled [compute sentiment score](https://docs.ngsurvey.com/form-management/form-designer/answers/answer-properties) properties can be used for sentiment index reporting. 
{% endhint %}