### Double Array Range and Sum String

Let's compute a few summary statistics on a dataset.
Create a method named `summarizeValues`

that accepts an array of `double`

values.
The array will not be `null`

and will not be empty.

Compute the mean and the range of the dataset and return a `String`

in the following format:

Where `<mean>`

and `<range>`

are the mean and range of the dataset computed by your method.

Round the values to 2 decimal points using a method `round`

which accepts a `double`

value.
For example, `round(3.33542)`

would return `3.34`

.

Given the array `{1.0, 2.0, 4.0}`

, your method should return: