# Formulaic Density and Usage Statistics per Sura

The **Formulaic Density and Usage Statistics per Sura** report, found under the “Formulae” menu lists each of the 114 suras in the Qur’an along with information related to the formulaic phrases found in that sura. It looks like this:

1 | Formula Length and Type. You can choose the type of formulae that Qur’an Gateway counts and shows in the report. (The length is the number of Arabic words in a formula; the type allows you to choose from any of the three formula types that Qur’an Gateway understands). Learn more about formula lengths and types here. |

2 | Sura Number and Provenance. Each sura has its number and provenance (Meccan or Medinan, according to the commonly used Nöldeke-Schwally-Robinson system) listed. Click on the sura number to see verse by verse detail of the formulae in the sura. |

3 | Roots. The number of Arabic roots in each sura. (You can sort by this, and indeed any column, by using the buttons at the top of each column). |

4 | Roots Part of a Formulae. Shows the number of Arabic roots in this sura that are part of a formulaic phrase. (This is used, along with the total number of roots (see #3 above) to calculate the formulaic density of this sura, which is defined as [Number of Roots Part of a Formulae] / [Total Number of Roots].TIP
Click on any number in this column to see a list of all the formulae in the sura. |

5 | Number of Formulae Used. Reports the total number of formulae used in this sura, including duplicates (so, for example, if a sura used just one formulae 10 times, this column would show "10". You can see a chart of this column by clicking the icon at the top of the column. |

6 | Diversity of Formulae Used. Reports the total number of different formulae used in this sura, including duplicates (so, for example, if a sura used just one formulae 10 times, this column would show "1". You can see a chart of this column by clicking the icon at the top of the column. |

7 | Formulae Unique to Sura. Counts how many formulae only occur in this sura. You can see a chart of this column by clicking the icon at the top of the column. |

8 | Formulaic Density. The formulaic density of this sura (the percentage of words in it that are part of a formulae). You can see a chart of this information by clicking the icon at the top of the column (or the icon on an individual row, to see a chart of the formulaic densities of each verse in that sura). |