# Technical Studies Reference

### Force Index

This study calculates and displays the Force Index for the Price and Volume data.

Let $$C$$ and $$V$$ be random variables denoting the Closing Price and Volume, respectively, and let their respective values at Index $$t$$ be denoted as $$C_t$$ and $$V_t$$. Then we denote the Force Index at Index $$t$$ as $$FI_t$$, and we compute its value for $$t > 0$$ as follows.

$$FI_t = V_t(C_t - C_{t - 1})$$

#### Inputs

• This study has no Inputs.