Percentile no. $$$99$$$ of $$$1$$$, $$$1$$$

Find the percentile no. $$$99$$$ of $$$1$$$, $$$1$$$.

The percentile no. $$$p$$$ is a value such that at least $$$p$$$ percent of the observations is less than or equal to this value and at least $$$100 - p$$$ percent of the observations is greater than or equal to this value.

The first step is to sort the values.

The sorted values are $$$1$$$, $$$1$$$.

Since there are $$$2$$$ values, then $$$n = 2$$$.

Now, calculate the index: $$$i = \frac{p}{100} n = \frac{99}{100} \cdot 2 = \frac{99}{50}$$$.

Since the index $$$i$$$ is not an integer, round up: $$$i = 2$$$.

The percentile is at the position $$$i = 2$$$.

So, the percentile is $$$1$$$.

The percentile no. $$$99$$$A is $$$1$$$A.