CourseCourseConceptConcept

CAIE IGCSE Mathematics Extended E9.5.3 Draw By Eye Interpret and Use a Straight Line of Best Fit Questions

Represent the overall scatter pattern with one ruled straight line. Balance the points on either side, then use the line and the axis scales to estimate a value for a given observation.

Syllabus
2028–2030
Course
Mathematics 0580
Level
Extended

Exam points

  • Draw one ruled straight line of best fit that represents the overall data pattern
  • Use the line of best fit to estimate a value, allowing for axis units and follow-through

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