[Dilettante_Pro]

ureech,
Ваш пример:

var chart1, chart2;

// Once DOM (document) is finished loading
$(document).ready(function() {

    // First chart initialization
    chart1 = new Highcharts.Chart({
     chart: {
        renderTo: 'chart_1',
        type: 'line',
        height: 350,
     },
     title: {
        text: 'Изменение размеров шеи,талии и бёдер за 10 недель в %'
     },
     xAxis: {
        categories: [1,2,3,4,5,6,7,8,9,10]
     },
     yAxis: {
        title: {
           text: 'Interviewed'
        }
     },
     series: [{
        name: 'Талия',
        data: [5, 10, 20, 22, 25, 28, 30, 40, 80, 90]
     }, {
        name: 'Бёдра',
        data: [15, 15, 18, 40, 30, 25, 60, 60, 80, 70]
     }, {
        name: 'Шея',
        data: [1, 3, 6, 0, 50, 25, 50, 60, 30, 100]
     }]
    });

То же самое с данными из строки:

var chart1, chart2;
var legs = "15, 15, 18, 40, 30, 25, 60, 60, 80, 70";
// Once DOM (document) is finished loading
$(document).ready(function() {

    // First chart initialization
    chart1 = new Highcharts.Chart({
     chart: {
        renderTo: 'chart_1',
        type: 'line',
        height: 350,
     },
     title: {
        text: 'Изменение размеров шеи,талии и бёдер за 10 недель в %'
     },
     xAxis: {
        categories: [1,2,3,4,5,6,7,8,9,10]
     },
     yAxis: {
        title: {
           text: 'Interviewed'
        }
     },
     series: [{
        name: 'Талия',
        data: [5, 10, 20, 22, 25, 28, 30, 40, 80, 90]
     }, {
        name: 'Бёдра',
        data: legs.split(",")
     }, {
        name: 'Шея',
        data: [1, 3, 6, 0, 50, 25, 50, 60, 30, 100]
     }]
    });