logo

Cambridge IGCSE Statistics practice

Paper 1 structured question: Bivariate distributions

Try the question first, then check the answer and practise the same topic again.

Attempt questionBivariate distributions revisionRevise the key idea

At a glance

1

Paper

2

Marks

Topic

Bivariate distributions

Exam-style question

Try this first

Paper 1Statistical Techniques2 marks

A scatter plot shows the relationship between hours studied (x) and test scores (y). The line of best fit has the equation y = 5x + 40.

Description

Line of Best Fit for Study Hours and Test Scores

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

x (hours studied)y (test score)
040
250
460
670
880
  1. a

    Calculate Estimate the test score for a student who studies for 7 hours.

    Aim for approximately 2 distinct marking points.

    [2]

0 of 1 part answered

Answer every part before opening the mark scheme.

Common mistake

No common mistake is linked to this question yet.

Related flashcards

Flashcard 1 of 6

Press Space to flip, arrows to move

Related practice questions

Question 1 of 5

Choose an answer, get feedback, then move sideways through the set.

0 of 4 attempted

Paper 1 structured question: Bivariate distributions

Paper 1Statistical Techniques2 marks

Description

Line of Best Fit for Temperature and Ice Cream Sales

The equation of the line of best fit is y = -2x + 50, where x is temperature in °C and y is ice cream sales in units.

x (temperature °C)y (sales units)
1030
1520
2010
250
  1. a

    Calculate Estimate the ice cream sales when the temperature is 12°C.

    Aim for approximately 2 distinct marking points.

    [2]