---
title: "Lecture 7 Note"
author: "Yiming Gong"
date: "2021-07-28T08:42:17Z"
tags: [Market]
link: "https://bookdown.org/yg484/lec_7_note/"
length_weight: "1.5%"
pinned: false
---

This is the class note for lecture 7. [...] Basic Definition:
Annualized standard deviation of the change in price or value
of a financial security. Volatility is a statistical measure of the dispersion1 of returns for a given security or market index. In most cases, the higher the volatility, the riskier the security. Volatility is often measured as either the standard deviation or variance between returns from that same security or market index. In the securities markets, volatility is often associated with big swings in either direction. For example, when the stock market rises and falls ...
