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← Data & Patterns I

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Lesson 8 of 9

Track quiz

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6 min

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Before the quiz, a quick cheat-sheet of the whole track.

Data and patterns: turning a messy pile of answers into a chart
IdeaWhat to remember
What is dataData is facts you collect and keep.
Kinds of dataData can be numbers, words, pictures, video or sounds.
GroupsGrouping puts each answer in one clear bucket.
TallyingA tally counts in bundles of five.
PictographsRead the key first, then count the pictures.
Bar chartsA taller bar means a bigger count.

You write down how many mangoes fell each evening for a week. Is that data?

  • No. It is on paper, not on a computer.
  • Yes. Data is facts you collect and keep.
  • Only after you type it into a computer.

A camera records the school gate all day. What kind of data is it?

  • Numbers
  • Words
  • Video

Eight answers about a favourite game come back mixed up. What does grouping do?

  • It deletes the repeated answers.
  • It puts each answer in one bucket.
  • It turns every answer into a picture.

A tally shows one bundle of five and two loose marks. How many is that?

  • 3
  • 7
  • 12

A key says 1 star = 2 books. A row has 3 stars. How many books is that?

  • 3
  • 5
  • 6

One bar in a chart is taller than all the others. What does it show?

  • That group is the best.
  • That group has the biggest count.
  • The chart is drawn wrong.

Next: Meeting AI: What It Is and What It Isn't. See what a guessing machine gets right, and what it gets wrong.

Reveal every answer to finish this lesson.