「真実を理解する - データ分析入門１：基本」の動画チュートリアル

<!DOCTYPE html> <html lang="ja"> <head> <meta name="pageKey" content="d_learning_course_video_guest">  <meta name="linkedin:pageTag" content="view_video"> <meta name="locale" content="ja_JP"> <meta id="config" data-app-version="2.0.2217" data-call-tree-id="AAYnlvaA6iFea0t8AEbcDg==" data-multiproduct-name="learning-guest-frontend" data-service-name="learning-guest-frontend" data-browser-id="eda4f4df-3d54-4a7c-87ae-8ce14b3cab8b" data-enable-page-view-heartbeat-tracking data-page-instance="urn:li:page:learning_course_video_guest;spV8oDOeRtWIkYbmvwy0sg==" data-disable-jsbeacon-pagekey-suffix="false" data-member-id="0"> <link rel="canonical" href="https://jp.linkedin.com/learning/learning-data-analytics-1-foundations-21067048/4231546">     <link rel="manifest" href="/homepage-guest/manifest.json" crossorigin="use-credentials">  <script> function getDfd() {let yFn,nFn;const p=new Promise(function(y, n){yFn=y;nFn=n;});p.resolve=yFn;p.reject=nFn;return p;} window.lazyloader = getDfd(); 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content="人々は、自分たちのプロジェクト、自分たちの組織、そして自分たちの売上に関するデータに真実を求めています。データが語る現実には、多くの種類の真実があります。データにまつわる真実をみていきます。"> <meta name="twitter:description" content="人々は、自分たちのプロジェクト、自分たちの組織、そして自分たちの売上に関するデータに真実を求めています。データが語る現実には、多くの種類の真実があります。データにまつわる真実をみていきます。"> <meta property="og:image" content="https://media.licdn.com/dms/image/v2/D4D0DAQGTGudgfpZwkA/learning-public-crop_675_1200/learning-public-crop_675_1200/0/1713980488665?e=2147483647&v=beta&t=pXC0xSADRSX3gN-8lxfF6Z1yDn62OCnVuN7AnG-qPeE"> <meta name="twitter:image" content="https://media.licdn.com/dms/image/v2/D4D0DAQGTGudgfpZwkA/learning-public-crop_675_1200/learning-public-crop_675_1200/0/1713980488665?e=2147483647&v=beta&t=pXC0xSADRSX3gN-8lxfF6Z1yDn62OCnVuN7AnG-qPeE">  <meta property="og:url" content="https://jp.linkedin.com/learning/learning-data-analytics-1-foundations-21067048/4231546"> <meta property="og:type" content="website"> <meta name="clientSideIngraphs" content="1" data-gauge-metric-endpoint="/learning-guest/api/ingraphs/gauge" data-counter-metric-endpoint="/learning-guest/api/ingraphs/counter"> <link rel="stylesheet" href="https://static.licdn.com/aero-v1/sc/h/222idjgc22471173g6oe53p8x"> <script type="application/ld+json"> {"@context":"http://schema.org/","@type":"VideoObject","name":"真実を理解する - データ分析入門１：基本","author":{"@type":"Person","name":"Robin Hunt","url":"https://jp.linkedin.com/learning/instructors/robin-hunt"},"thumbnailUrl":"https://media.licdn.com/dms/image/v2/D4D0DAQGTGudgfpZwkA/learning-public-crop_675_1200/learning-public-crop_675_1200/0/1713980488665?e=2147483647&v=beta&t=pXC0xSADRSX3gN-8lxfF6Z1yDn62OCnVuN7AnG-qPeE","description":"このコースではデータ分析について掘り下げ、データアナリストに必要な役割とスキルについて説明します。必要なデータの特定や各種データの取り扱い、データクリーニングや結合、ベストプラクティスなどを学びます。","duration":"PT2M23S","datePublished":"2024-04-30","uploadDate":"2024-04-30","requiresSubscription":false,"isAccessibleForFree":true,"contentUrl":"https://jp.linkedin.com/learning/learning-data-analytics-1-foundations-21067048/4231546","interactionCount":1363,"interactionStatistic":[{"@type":"InteractionCounter","interactionType":"http://schema.org/WatchAction","userInteractionCount":1363}],"transcript":"データにまつわる複数の事実を紹介します。統計的な事実、データの事実、そして、経営上の事実の３つについてです。統計的な事実は結果の重要性を指しています。データ分析した結果は統計学者や研究者に渡されることがあります。分析結果を受け取った彼らは分析結果やレポートの有意性を提示してくれます。偶然によって生まれた結果ではなく、統計的解析によって意味のある分析結果であるという裏付けが重要です。データの事実は分析データの正しさを指しています。データの事実はビジネス上の影響を受けることがあります。例えば必要なデータにアクセスできない、誰がデータを管理しているのかわからない、必要なデータの種類を把握していないなどの理由で、データ分析に必要なデータが揃っていない状態では、分析結果に影響を与えます。また、どのタイミングで収集したデータであるかも大切です。そして集めたデータセットは結合の方法が違えば、結果が変わってきます。結合が重要な理由です。次の例を考えてください。商品リストがあるとします。このリストは単に数を示しているのであって注文されたかどうかを示しているデータではありません。ここからはどの商品がよく売れたのか、売れ残ったのかといった経営上の事実はわかりません。データの事実、統計的な事実は、経営上の事実につながります。生産を行なっている企業にとって経営上の事実とは生産量をいくつにすればよいのかといった具体的な数字です。例えばある製品の開発に何時間も費やし、在庫を抱えたまま売れなかったらデータと経営上の事実はその製品を作る価値がない可能性が高いことを教えてくれます。データアナリストは、実際のデータがどのような経営上の事実を伝えているのかを理解し確認する必要があります。 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data-tracking-control-name="course_title" data-tracking-will-navigate="true" class="from-the-course__link">データ分析入門１：基本</a> </p> <section class="top-card"> <section class="top-card-layout container-lined overflow-hidden babybear:rounded-[0px]"> <section class="top-card__video-wrapper"> <div class="top-card__video">  <div class="share-native-video"> <video autoplay class="share-native-video__node video-js" crossorigin="anonymous" data-sources="[{"src":"https://dms.licdn.com/playlist/vid/v2/D4D0DAQEK6nzOHY3Lfg/mp4-640p-30fp-crf28/mp4-640p-30fp-crf28/0/1713897149404?e=2147483647&v=beta&t=4mPosucArpwT113NFZNOPiwFdOI6NwTOVMXy-EUyPeA#.mp4"}]" data-poster-url="https://media.licdn.com/dms/image/v2/D4D0DAQGTGudgfpZwkA/learning-public-crop_675_1200/learning-public-crop_675_1200/0/1713980488665?e=2147483647&v=beta&t=pXC0xSADRSX3gN-8lxfF6Z1yDn62OCnVuN7AnG-qPeE" 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babybear:flex-none babybear:w-full babybear:flex-none babybear:w-full"> <h1 class="top-card-layout__title font-sans text-lg papabear:text-xl font-bold leading-open text-color-text mb-0"> 真実を理解する </h1> <h2 class="top-card-layout__headline break-words font-sans text-md leading-open text-color-text"> コース: <a href="https://jp.linkedin.com/learning/learning-data-analytics-1-foundations-21067048?trk=course_title" data-tracking-control-name="course_title" data-tracking-will-navigate="true" class="from-the-course__link">データ分析入門１：基本</a> </h2>   <div class="top-card-layout__cta-container flex flex-wrap mt-0.5 papabear:mt-0 ml-[-12px]">   </div> </div>  </div>   </div> </section> </section> <div class="details mx-details-container-padding"> <div class="tabs content-tabs" data-tab-id="course-content-tabs"> <ul class="tabs__list" role="tablist">  <li class="tab flex ml-3 first-of-type:ml-0" role="presentation"> <button aria-selected="true" class="tab-button tab-md tab-selected" data-tracking-control-name="transcripts-tab" data-id="tab__button" role="tab" id="content-tabs__transcripts-btn"> 字幕 </button> </li>  <li class="tab flex ml-3 first-of-type:ml-0" role="presentation"> <button aria-selected="false" class="tab-button tab-md " data-tracking-control-name="offline-tab" data-id="tab__button" role="tab" tabindex="-1" id="content-tabs__offline-btn" data-test-live-offline-tab> オフライン視聴 </button> </li> </ul>  <div class="tab__panel" tabindex="0" role="tabpanel"> <section class="core-section-container my-3 transcripts">  <h2 class="core-section-container__title section-title"> 真実を理解する </h2>  <div class="core-section-container__content break-words"> <div class="transcripts__copy"> <span class="transcripts__quotation">“</span> <p> データにまつわる複数の事実を紹介します。統計的な事実、データの事実、そして、経営上の事実の３つについてです。統計的な事実は結果の重要性を指しています。データ分析した結果は統計学者や研究者に渡されることがあります。分析結果を受け取った彼らは分析結果やレポートの有意性を提示してくれます。偶然によって生まれた結果ではなく、統計的解析によって意味のある分析結果であるという裏付けが重要です。データの事実は分析データの正しさを指しています。データの事実はビジネス上の影響を受けることがあります。例えば必要なデータにアクセスできない、誰がデータを管理しているのかわからない、必要なデータの種類を把握していないなどの理由で、データ分析に必要なデータが揃っていない状態では、分析結果に影響を与えます。また、どのタイミングで収集したデータであるかも大切です。そして集めたデータセットは結合の方法が違えば、結果が変わってきます。結合が重要な理由です。次の例を考えてください。商品リストがあるとします。このリストは単に数を示しているのであって注文されたかどうかを示しているデータではありません。ここからはどの商品がよく売れたのか、売れ残ったのかといった経営上の事実はわかりません。データの事実、統計的な事実は、経営上の事実につながります。生産を行なっている企業にとって経営上の事実とは生産量をいくつにすればよいのかといった具体的な数字です。例えばある製品の開発に何時間も費やし、在庫を抱えたまま売れなかったらデータと経営上の事実はその製品を作る価値がない可能性が高いことを教えてくれます。データアナリストは、実際のデータがどのような経営上の事実を伝えているのかを理解し確認する必要があります。 </p> </div> </div> </section> </div>  <div class="tab__panel" tabindex="0" role="tabpanel" hidden> <section class="core-section-container my-3 offline">  <h2 class="core-section-container__title section-title"> コースをダウンロードして学習しましょう。 </h2>  <div class="core-section-container__content break-words"> <p class="offline__description"> ラーニングコースをダウンロードしてオフラインで視聴しましょう。ダウンロードしたコースはLinkedInラーニングのモバイルアプリ (iOSまたはAndroid) で視聴できます。 </p> <div class="offline__link-container"> <a class="offline__link" href="https://itunes.apple.com/jp/app/apple-store/id1084807225?ls=1&pt=10746&mt=8&ct=learning_course_tab_viewoffline&trk=apple_app_store" data-tracking-control-name="apple_app_store" data-tracking-will-navigate rel="noopener noreferrer" target="_blank"> <img alt="App Storeからダウンロード" class="offline__image" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/emczv26hz24woii2j4aleyry"> </a> <a class="offline__link" href="https://play.google.com/store/apps/details?id=com.linkedin.android.learning&referrer=utm_source=linkedinlearning&utm_medium=mobileWeb&utm_campaign=learning_guest&hl=jp&ct=learning_course_tab_viewoffline&trk=google_play_store" data-tracking-control-name="google_play_store" data-tracking-will-navigate rel="noopener noreferrer" 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class="table-of-contents__item-duration"> 6分37秒 </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://jp.linkedin.com/learning/learning-data-analytics-1-foundations-21067048/2119819?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <icon class="table-of-contents__item-status table-of-contents__item-status--unlocked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/5jwhkytplzxiejvhzfu0t7m8l" data-svg-class-name="table-of-contents__item-status-svg--unlocked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> 練習問題：商品を分類する </div> <div class="table-of-contents__item-duration"> 55秒 </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate 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data-delayed-url="https://static.licdn.com/aero-v1/sc/h/5jwhkytplzxiejvhzfu0t7m8l" data-svg-class-name="table-of-contents__item-status-svg--unlocked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> Power Queryでデータモデリングを行う </div> <div class="table-of-contents__item-duration"> 10分8秒 </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://jp.linkedin.com/learning/learning-data-analytics-1-foundations-21067048/4232559?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <icon class="table-of-contents__item-status table-of-contents__item-status--unlocked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/5jwhkytplzxiejvhzfu0t7m8l" data-svg-class-name="table-of-contents__item-status-svg--unlocked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> 練習問題：Power Queryでヘッダーの名前を変更する </div> <div class="table-of-contents__item-duration"> 43秒 </div> </div> </a> </li> <li class="toc-item"> <a data-tracking-control-name="learning-course_tocItem" data-tracking-will-navigate href="https://jp.linkedin.com/learning/learning-data-analytics-1-foundations-21067048/4228814?autoplay=true&trk=learning-course_tocItem" class="toc-item__link" aria-current="false"> <icon class="table-of-contents__item-status table-of-contents__item-status--unlocked" data-delayed-url="https://static.licdn.com/aero-v1/sc/h/5jwhkytplzxiejvhzfu0t7m8l" data-svg-class-name="table-of-contents__item-status-svg--unlocked"></icon> <div class="table-of-contents__item-details"> <div class="table-of-contents__item-title"> 解答：Power Queryでのヘッダーの名前の変更 </div> <div class="table-of-contents__item-duration"> 4分9秒 </div> </div> </a> </li> </ul>  </div> </li> <li class="toc-section"> <div class="show-more-less"> <button class="show-more-less__button show-more-less__more-button show-more-less-button " 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role="presentation">  <button aria-label="العربية (アラビア語)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-ar_AE" data-locale="ar_AE" role="menuitem" lang="ar_AE"> العربية (アラビア語) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="বাংলা (ベンガル語)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-bn_IN" data-locale="bn_IN" role="menuitem" lang="bn_IN"> বাংলা (ベンガル語) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="Čeština (チェコ語)" class="font-sans text-xs link block py-[5px] 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lang="ms_MY"> Bahasa Malaysia (マレー語) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="Nederlands (オランダ語)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-nl_NL" data-locale="nl_NL" role="menuitem" lang="nl_NL"> Nederlands (オランダ語) </button> </li> <li class="language-selector__item" role="presentation">  <button aria-label="Norsk (ノルウェー語)" class="font-sans text-xs link block py-[5px] px-2 w-full hover:cursor-pointer hover:bg-color-action hover:text-color-text-on-dark focus:bg-color-action focus:text-color-text-on-dark language-selector__link !font-regular" data-tracking-control-name="language-selector-no_NO" data-locale="no_NO" role="menuitem" lang="no_NO"> Norsk (ノルウェー語) </button> </li> <li class="language-selector__item" 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「真実を理解する - データ分析 入門１：基本」の動画チュートリアル | LinkedInラーニング

「真実を理解する - データ分析入門１：基本」の動画チュートリアル | LinkedInラーニング