JSFiddle - React, Tailwind, and code Playground

JavaScript

var dataArr = [];
var value = 5.8;
var deviation = 2;

function random(m, s) {
  return m + 2.0 * s * (Math.random() + Math.random() + Math.random() - 1.5);
}

for (var i = 1; i <= 800; i++) {
	dataArr.push(random(value, deviation))
};

console.log(`dataArr ${dataArr.length} ==> `, dataArr);