## Historigram (2020)

Here we will discuss the graphical representation of time series data, called historigram. As we have discussed in the introduction to Time Series, given an observed time series, the first step in analyzing a time series is to plot the given series on a graph …

## Time Series Introduction (2020)

Here we will discuss Time Series Data and Time Series Analysis. The sequence $y_1,y_2,\cdots, y_n$ of $n$ observations of a variable (say $Y$), recorded in accordance with their time of occurrence $t_1, t_2, \cdots, t_n$, is called a time series. Symbolically, the variable $Y$ can …

## Random Walk Model (2016)

The random walk model is widely used in the area of finance. The stock prices or exchange rates (Asset prices) follow a random walk. A common and serious departure from random behavior is called a random walk (non-stationary) since today’s stock price is equal to …

## Objectives of Time Series Analysis (2014)

The one of major Objectives of Time Series is to identify the underlying structure of the Time Series