Starter quiz

  • In a data investigation, the __________ is the entire set of people, creatures, plants or items that make up the whole group which is being studied.
    • correlation
    • extrapolation
    • population  ✓
    • sample
  • ______ is the relationship between two variables on a scatter graph.
    • 'Correlation' ✓
  • Extrapolation is the process of estimating unknown values that are ______.
    • based on the mean of the data
    • inside the range of existing data
    • outside the range of existing data  ✓
  • What type of correlation does the scatter graph show?
    What type of correlation does the scatter graph show?
    • negative correlation  ✓
    • no correlation
    • positive correlation
  • A data investigation finds a positive correlation between temperature and ice cream sales. What does this suggest?
    • As the temperature increases, the number of ice cream sales decreases.
    • As the temperature increases, the number of ice cream sales also increases.  ✓
    • There is no relationship between the temperature and ice cream sales.
    • Ice cream sales cause the temperature to increase
  • The mean for the following numbers data set 8.2, 7.4, 11.3, 9.1 is ______.
    • '9' ✓
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