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Grade 6 · Math · Unit 17 of 18

Data & Graphs

Histograms, range and line graphs

What your child practises

Telling discrete data (counted) from continuous data (measured), reading histograms and line graphs, finding the range, and spotting misleading graphs.

Prince Edward Island Curriculum curriculum outcome: SP1; SP3 · reading histograms and line graphs, finding the range, and spotting misleading graphs

How we explain it

Children can open this short lesson before they practise.

  1. Discrete data is counted (pets). Continuous data is measured (height).
  2. A broken-line graph shows how something changes over time.
  3. The range is the greatest value minus the least value.

Example: Test scores: 6, 9, 7, 10. What is the range? Greatest: 10. Least: 6. 10 − 6 = 4. Answer: 4

Sample questions

A taste of this unit. In the app, questions change every time and get easier or harder to match your child.

  1. Question 1

    How many students were counted in all?

    Minutes spent reading (histogram)
    MinutesStudents
    0–912
    10–1911
    20–297
    30–3912
    • 38
    • 42
    • 40

  2. Question 2

    Between which two times did the temperature rise the most?

    Temperature (°C) through the day
    Time°C
    8 a.m.5
    10 a.m.5
    12 p.m.7
    2 p.m.10
    • 8 a.m. to 10 a.m.
    • 12 p.m. to 2 p.m.
    • 10 a.m. to 12 p.m.

  3. Question 3

    How many students read for 30–39 minutes?

    Minutes spent reading (histogram)
    MinutesStudents
    0–912
    10–194
    20–294
    30–392
    • 6
    • 2
    • 7

  4. Question 4

    Is this data discrete or continuous? the goals scored in a game

    • continuous
    • discrete

  5. Question 5

    Which data set has the greater range?

    Set ASet B
    1418
    512
    1016
    1826
    2922
    • Set A
    • Set B

  6. Question 6

    Is this data discrete or continuous? the number of pets in a home

    • discrete
    • continuous

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