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Topic: Scatter Graphs (Foundation - Unit 1)

Specification References: S4.2

S4.2 Look at data to find patterns and exceptions


Candidates should be able to:

  • find patterns in data that may lead to a conclusion being drawn
  • look for unusual data values such as a value that does not fit an otherwise good correlation

Examples

  1. Jerry has a hypothesis that most days at his house are dry.
    In June there were 20 dry days at his house.
    Give a reason why this may not support Jerry’s hypothesis.

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  1. The data shows the number of passengers on bus services during one day.

    29 45 43 38 29 21 14 12 11 7 12
    17 22 31 37 43 45 45 38 27 21 15

    Buses are every 30 minutes from 7 am.

    1. What time was the bus with the fewest passengers?
    2. Estimate the time of:
      1. the morning rush hour
      2. the afternoon rush hour
    3. Give a reason why you chose the times in part (b).