bench: refactor random number generation in stats/base/dists/f

[anandkaranubc]

Resolves none.

Description

What is the purpose of this pull request?

This pull request:

• Refactors random number generation in JS benchmarks for stats/base/dists/f.
• Replaces randu() with uniform() for cleaner and more consistent code.
• Moves the random number generation outside the benchmarking loops.

Related Issues

Does this pull request have any related issues?

This pull request:

• resolves none

Questions

Any questions for reviewers of this pull request?

No.

Other

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No.

Checklist

Please ensure the following tasks are completed before submitting this pull request.

• Read, understood, and followed the contributing guidelines.

---

@stdlib-js/reviewers

[kgryte]

/stdlib merge

[kgryte]

LGTM

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
stats/base/dists/f/cdf	$\color{green}253/253$ $\color{green}+100.00\%$	$\color{green}31/31$ $\color{green}+100.00\%$	$\color{green}3/3$ $\color{green}+100.00\%$	$\color{green}253/253$ $\color{green}+100.00\%$
stats/base/dists/f/ctor	$\color{green}378/378$ $\color{green}+100.00\%$	$\color{green}30/30$ $\color{green}+100.00\%$	$\color{green}15/15$ $\color{green}+100.00\%$	$\color{green}378/378$ $\color{green}+100.00\%$
stats/base/dists/f/entropy	$\color{green}210/210$ $\color{green}+100.00\%$	$\color{green}10/10$ $\color{green}+100.00\%$	$\color{green}2/2$ $\color{green}+100.00\%$	$\color{green}210/210$ $\color{green}+100.00\%$
stats/base/dists/f/kurtosis	$\color{green}204/204$ $\color{green}+100.00\%$	$\color{green}8/8$ $\color{green}+100.00\%$	$\color{green}2/2$ $\color{green}+100.00\%$	$\color{green}204/204$ $\color{green}+100.00\%$
stats/base/dists/f/mean	$\color{green}195/195$ $\color{green}+100.00\%$	$\color{green}10/10$ $\color{green}+100.00\%$	$\color{green}2/2$ $\color{green}+100.00\%$	$\color{green}195/195$ $\color{green}+100.00\%$
stats/base/dists/f/mode	$\color{green}185/185$ $\color{green}+100.00\%$	$\color{green}8/8$ $\color{green}+100.00\%$	$\color{green}2/2$ $\color{green}+100.00\%$	$\color{green}185/185$ $\color{green}+100.00\%$
stats/base/dists/f/pdf	$\color{red}523/571$ $\color{green}+91.59\%$	$\color{red}60/64$ $\color{green}+93.75\%$	$\color{green}5/5$ $\color{green}+100.00\%$	$\color{red}523/571$ $\color{green}+91.59\%$
stats/base/dists/f/quantile	$\color{green}231/231$ $\color{green}+100.00\%$	$\color{green}22/22$ $\color{green}+100.00\%$	$\color{green}3/3$ $\color{green}+100.00\%$	$\color{green}231/231$ $\color{green}+100.00\%$
stats/base/dists/f/skewness	$\color{green}201/201$ $\color{green}+100.00\%$	$\color{green}8/8$ $\color{green}+100.00\%$	$\color{green}2/2$ $\color{green}+100.00\%$	$\color{green}201/201$ $\color{green}+100.00\%$
stats/base/dists/f/stdev	$\color{green}202/202$ $\color{green}+100.00\%$	$\color{green}8/8$ $\color{green}+100.00\%$	$\color{green}2/2$ $\color{green}+100.00\%$	$\color{green}202/202$ $\color{green}+100.00\%$
stats/base/dists/f/variance	$\color{green}201/201$ $\color{green}+100.00\%$	$\color{green}8/8$ $\color{green}+100.00\%$	$\color{green}2/2$ $\color{green}+100.00\%$	$\color{green}201/201$ $\color{green}+100.00\%$

The above coverage report was generated for the changes in this PR.