What is 'Symmetrical Distribution'
A situation in which the values of variables occur at regular frequencies, and the mean, median and mode occur at the same point. Unlike asymmetrical distribution, symmetrical distribution does not skew. A symmetrical distribution is commonly shaped like a bell curve when depicted on a graph. If a line is drawn down the middle of the graph, the two sides will mirror each other.
Also called a "symmetric distribution" or "normal distribution".
BREAKING DOWN 'Symmetrical Distribution'
A type of symmetrical distribution that is not shaped like a bell curve is a bimodal symmetric distribution. This graph is shaped like two bell curves placed side by side. The two sides of this graph still mirror each other; however, only the mean and median occur at the same point  the center of the graph. The modes occur at two points: the highest point in each of the two bell curves.

Asymmetrical Distribution
A situation in which the values of variables occur at irregular ... 
Bell Curve
The most common type of distribution for a variable. The term ... 
Normal Distribution
A probability distribution that plots all of its values in a ... 
Line Graph
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Uniform Distribution
In statistics, a type of probability distribution in which all ... 
Normal Yield Curve
A yield curve in which shortterm debt instruments have a lower ...

Markets
What is a Bell Curve?
The bell curve is the most common type of graphed data distribution. 
Investing
What a Normal Distribution Means
Normal distribution describes a symmetrical data distribution, where most of the results lie near the mean. 
Trading
Trading With Gaussian Models Of Statistics
The entire study of statistics originated from Gauss and allowed us to understand markets, prices and probabilities, among other applications. 
Trading
What's Skewness?
Skewness describes how a data distribution leans. 
Investing
Trade Bond ETFs Using Yield Curves
Different types of yield curves provide important insights for trading bondbased securities. 
Investing
Find The Right Fit With Probability Distributions
Discover a few of the most popular probability distributions and how to calculate them. 
Markets
Understanding Term Structure of Interest Rates
The term structure of interest rates is a common method of valuing bonds. 
Managing Wealth
Using Normal Distribution Formula To Optimize Your Portfolio
Normal or bell curve distribution can be used in portfolio theory to help portfolio managers maximize return and minimize risk. 
Investing
Options Risk Graphs: Visualizing Profit Potential
With a single diagram, you can see how price, time and volatility affect potential gains. 
Investing
The Linear Regression Of Time and Price
This investment strategy can help investors be successful by identifying price trends while eliminating human bias.

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