How does the concept of a 'line of best fit' apply to the data presented in the graph?
GCSE Secondary Maths Age 13-17 - Probability & Statistics: Time Series Graph - Explained
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Mathematics
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10th - 12th Grade
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Hard
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The video tutorial explains how to interpret a time series graph showing the percentage of people using a village shop from 1980 to 2010. It describes the trend of decreasing usage over time and demonstrates how to predict future usage for 2020 using a line of best fit. The tutorial also discusses the reliability of such predictions, noting that predictions beyond the given data range are uncertain. Marks allocation for the questions is also covered.
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2 questions
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OPEN ENDED QUESTION
3 mins • 1 pt
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
What factors could affect the accuracy of the prediction made for 2020?
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