arget="#데이터"><span class="header-section-number">1.1</span> 데이터</a>
  <ul class="collapse">
  <li><a href="#측정의-타당도-및-신뢰도" id="toc-측정의-타당도-및-신뢰도" class="nav-link" data-scroll-target="#측정의-타당도-및-신뢰도"><span class="header-section-number">1.1.1</span> 측정의 타당도 및 신뢰도</a></li>
  <li><a href="#척도" id="toc-척도" class="nav-link" data-scroll-target="#척도"><span class="header-section-number">1.1.2</span> 척도</a></li