Learning objective

Utilize a line of best fit to estimate the value of one variable based on the value of the other, using the graph or its equation.

Read the explanation, check the common trap, then practise with flashcards and questions.

Exam focus

Cambridge IGCSE StatisticsBivariate distributions

Study support

Understand this objective

Quick explanation

This point belongs to Bivariate distributions, especially Bivariate distributions outcomes.
You need to be able to utilize a line of best fit to estimate the value of one variable based on the value of the other, using the graph or its equation.
The key ideas to know are Predict and Interpret.
Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

PredictInterpret

Why it matters

This objective helps connect Bivariate distributions outcomes to exam-style questions, flashcards, and revision notes for Bivariate distributions.

Revision tools

Flashcards10 linked cards

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Practice Questions7 linked questions

Question 1 of 7

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0 of 5 attempted

Paper 1Statistical Techniques2 marks

Description

The equation of the line of best fit is y = 5x + 40, where x is hours studied and y is the test score.

a
Calculate Estimate the test score for a student who studies for 7 hours.
Your answer
Aim for approximately 2 distinct marking points.
[2]

Revision notestopic notes

Open the full topic revision notes when you are ready to review this objective in context.

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