arithmetic moving average is not working

@Makanz the moving average is not working, I used your example and put my data, the moving average line is straight instead of following the data like in Excel
it should be like this

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>BarChart Example</title>
    <script src="assets/js/chartjs/4.3.0/chart.js"></script>
    <script src="assets/js/chartjs/4.3.0/chartjs-plugin-trendline.js"></script>
    <script>
        document.addEventListener("DOMContentLoaded", function (event) {
            // Bar chart
            new Chart(document.getElementById("bar-chart"), {
                type: 'bar',
                data: {
                    labels: [
                        '12(2020)',
                        '13(2020)',
                        '14(2020)',
                        '15(2020)',
                        '16(2020)',
                        '17(2020)',
                        '18(2020)',
                        '19(2020)',
                        '20(2020)',
                        '21(2020)',
                        '22(2020)',
                        '23(2020)',
                        '24(2020)',
                        '25(2020)',
                        '26(2020)',
                        '27(2020)',
                        '28(2020)',
                        '29(2020)',
                        '30(2020)',
                        '31(2020)',
                        '32(2020)',
                        '33(2020)',
                        '34(2020)',
                        '35(2020)',
                        '36(2020)',
                        '37(2020)',
                        '38(2020)',
                        '39(2020)',
                        '40(2020)',
                        '41(2020)',
                        '42(2020)',
                        '43(2020)',
                        '44(2020)',
                        '45(2020)',
                        '46(2020)',
                        '47(2020)',
                        '48(2020)',
                        '49(2020)',
                        '50(2020)',
                        '51(2020)',
                        '52(2020)',
                        '53(2020)',
                        '1(2021)',
                        '2(2021)',
                        '3(2021)',
                        '4(2021)',
                        '5(2021)',
                        '6(2021)',
                        '7(2021)',
                        '8(2021)',
                        '9(2021)',
                        '10(2021)',
                        '11(2021)',
                        '12(2021)',
                        '13(2021)',
                        '14(2021)',
                        '15(2021)',
                        '16(2021)',
                        '17(2021)',
                        '18(2021)',
                        '19(2021)',
                        '20(2021)',
                        '21(2021)',
                        '22(2021)',
                        '23(2021)',
                        '24(2021)',
                        '25(2021)',
                        '26(2021)',
                        '27(2021)',
                        '28(2021)',
                        '29(2021)',
                        '30(2021)',
                        '31(2021)',
                        '32(2021)',
                        '33(2021)',
                        '34(2021)',
                        '35(2021)',
                        '36(2021)',
                        '37(2021)',
                        '38(2021)',
                        '39(2021)',
                        '40(2021)',
                        '41(2021)',
                        '42(2021)',
                        '43(2021)',
                        '44(2021)',
                        '45(2021)',
                        '46(2021)',
                        '47(2021)',
                        '48(2021)',
                        '49(2021)',
                        '50(2021)',
                        '51(2021)',
                        '52(2021)',
                        '1(2022)',
                        '2(2022)',
                        '3(2022)',
                        '4(2022)',
                        '5(2022)',
                        '6(2022)',
                        '7(2022)',
                        '8(2022)',
                        '9(2022)',
                        '10(2022)',
                        '11(2022)',
                        '12(2022)',
                        '13(2022)',
                        '14(2022)',
                        '15(2022)',
                        '16(2022)',
                        '17(2022)',
                        '18(2022)',
                        '19(2022)',
                        '20(2022)',
                        '21(2022)',
                        '22(2022)',
                        '23(2022)',
                        '24(2022)',
                        '25(2022)',
                        '26(2022)',
                        '27(2022)',
                        '28(2022)',
                        '29(2022)',
                        '30(2022)',
                        '31(2022)',
                        '32(2022)',
                        '33(2022)',
                        '34(2022)',
                        '35(2022)',
                        '36(2022)',
                        '37(2022)',
                        '38(2022)',
                        '39(2022)',
                        '40(2022)',
                        '41(2022)',
                        '42(2022)',
                        '43(2022)',
                        '44(2022)',
                        '45(2022)',
                        '46(2022)',
                        '47(2022)',
                        '48(2022)',
                        '49(2022)',
                        '50(2022)',
                        '51(2022)',
                        '52(2022)',
                        '01(2023',
                        '02(2023)',
                        '03(2023)',
                        '04(2023)',
                        '05(2023)',
                        '06(2023)',
                        '07(2023)',
                        '08(2023)',
                        '09(2023)',
                        '10(2023)',
                        '11(2023)',
                        '12(2023)',
                        '13(2023)',
                        '14(2023)',
                        '15(2023)',
                        '16(2023)',
                        '17(2023)',
                        '18(2023)'],
                    datasets: [
                        {
                            label: "Info",
                            backgroundColor: ["#3e95cd", "#8e5ea2","#3cba9f","#e8c3b9","#c45850"],
                            data: [1,
                                7,
                                18,
                                31,
                                39,
                                33,
                                69,
                                107,
                                109,
                                103,
                                134,
                                124,
                                91,
                                105,
                                84,
                                110,
                                149,
                                111,
                                113,
                                76,
                                68,
                                66,
                                59,
                                70,
                                51,
                                51,
                                93,
                                76,
                                81,
                                86,
                                90,
                                114,
                                139,
                                140,
                                241,
                                287,
                                484,
                                440,
                                554,
                                610,
                                352,
                                364,
                                468,
                                347,
                                269,
                                220,
                                179,
                                162,
                                193,
                                272,
                                381,
                                345,
                                426,
                                325,
                                279,
                                249,
                                225,
                                231,
                                314,
                                358,
                                318,
                                335,
                                366,
                                339,
                                257,
                                272,
                                223,
                                198,
                                131,
                                131,
                                132,
                                178,
                                136,
                                231,
                                249,
                                167,
                                131,
                                174,
                                180,
                                123,
                                102,
                                75,
                                83,
                                51,
                                35,
                                28,
                                38,
                                30,
                                20,
                                15,
                                16,
                                12,
                                2,
                                5,
                                288,
                                1158,
                                2271,
                                1713,
                                860,
                                341,
                                124,
                                81,
                                28,
                                22,
                                28,
                                3,
                                7,
                                4,
                                7,
                                2,
                                17,
                                31,
                                32,
                                56,
                                123,
                                220,
                                399,
                                534,
                                803,
                                575,
                                376,
                                228,
                                85,
                                53,
                                41,
                                29,
                                19,
                                11,
                                7,
                                5,
                                0,
                                2,
                                1,
                                3,
                                3,
                                5,
                                10,
                                24,
                                63,
                                319,
                                511,
                                295,
                                196,
                                102,
                                83,
                                61,
                                41,
                                20,
                                22,
                                22,
                                14,
                                4,
                                18,
                                43,
                                54,
                                66,
                                67,
                                80,
                                56,
                                42,
                                41,
                                20,
                                24,
                                12],
                            trendlineLinear: {
                                colorMin: "rgba(255,105,180, .8)",
                                lineStyle: "dotted",
                                width: 2
                            }
                        },
                    ]
                },
                options: {
                    legend: { display: false },
                    title: {
                        display: true,
                        text: 'Predicted world population (millions) in 2050'
                    }
                }
            });
        });
    </script>
</head>

<body>
    <h1>Bar Chart</h1>

    <div style="width: 800px;">
        <canvas id="bar-chart"></canvas>
    </div>

    <p>Using example code from <a href="http://tobiasahlin.com/blog/chartjs-charts-to-get-you-started/"
            target="_blank">tobiasahlin.com.</a></p>
</body>

</html>
Makanz / chartjs-plugin-trendline

arithmetic moving average is not working #77

it should be like this
