Lectures
WEEK 03 · BEGINNER LECTURE

Descriptive Statistics

01 · Why summarise at all?Opening

Fifteen numbers already defeat us.

  • A delivery app records how long each order took.
  • Here are fifteen of them, in minutes.
  • How long does a delivery usually take?
Predict

Look at the raw list for ten seconds. What can you say confidently?

15 delivery times, in minutesCan you say how long a delivery usually takes? Try before reading on.312447223318289525402436213027SORTED — the same 15 numbers, reordered and nothing else182122242425272830313336404795middle = 28 minaverage = 33.4 minone order took 95
01 / 22 · opening