# Category: Discrete Random Variables

## Using GC to calculate Expectation and Variance of Discrete Random Variable

**Example 1**

**Solution**

Enter the data in the GC as follows:

Variance can also calculated using the GC as follows:

**Example 2**

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# Category: Discrete Random Variables

## An interesting relationship between two discrete random variables associated with a die

## Using GC to calculate Expectation and Variance of Discrete Random Variable

**Example 1**

**Solution**

Enter the data in the GC as follows:

Variance can also calculated using the GC as follows:

**Example 2**

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