matlabdistributionquantile# Computing Quantile in MATLAB

Is there any built-in function in MATLAB to compute

0.025th quantile of Binomial distribution with parameter n=60 and p=0.4

0.975 quantile of standard normal distribution ?

Solution

Do you have the Statistics toolbox? If yes,

```
>> binoinv(.025,60,.4)
ans =
17
>> norminv(.975,0,1)
ans =
1.9600
```

If not, you could use the following equivalences:

- The inverse normal CDF can be expressed in terms of the
`erfinv`

function - The binomial CDF can be expressed in terms of the
`betainc`

function

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