# Statistical Functions

## BND

Returns the bivariate normal distribution function.

```
=BND(x, y, rho)
```

## CND

Returns the standard normal cumulative distribution (has a mean of zero and a standard deviation of one).

```
=CND(z)
' Returns 0.6915
=CND(0.5)
```

`z`

is the value for which you want the distribution.

## CNDEV

Returns the inverse cumulative normal distribution function.

```
=CNDEV(U)
' Returns 0
=CNDEV(0.5)
```

`U`

is the value for which you want the distribution.

## ND

Returns the normal distribution function.

```
=ND(x)
' Returns 0.3521
=ND(0.5)
```

`x`

is the value for which you want the distribution.

Returns the probability density function.

```
=PDF(z)
' Returns 0.3521
=PDF(0.5)
```

`z`

is the value for which you want the distribution.