READ_ONLY_ACCESS
[
  {
    "id": "stats1-w02-000",
    "front": "Week 2 Diagnostic: In a dataset of 50 students, 20 prefer Python, 15 prefer Java, and 15 prefer C++. What is the relative frequency of students who prefer Python?",
    "back": "Answer: 0.4 — Relative frequency = count / total = 20 / 50 = 0.4."
  },
  {
    "id": "stats1-w02-001",
    "front": "Week 2 Diagnostic: Which measure of central tendency is valid for nominal categorical data?",
    "back": "Answer: C — Nominal data has no ordering or numerical values, so only the most frequent category (Mode) is meaningful."
  }
]