QCAA General Maths EA Practice Questions - QCAA General Mathematics External Assessment (Queensland) Exam - QCAA General Maths EA Practice Questions - QCAA General Mathematics External Assessment (Queensland) Exam

Question 1

In a two-way frequency table, 60 of 150 students who play sport also study music, while 20 of 100 students who do not play sport study music. Comparing the column percentages, what does this suggest?

There is no association between playing sport and studying music Sport players are more likely to study music Sport players are less likely to study music All sport players study music

Correct Answer:

Sport players are more likely to study music

Question 2

When constructing a scatterplot to investigate whether hours studied explains exam score, which variable should be placed on the horizontal axis?

Exam score, the response variable Hours studied, the explanatory variable Either variable, it does not matter Whichever has the larger values

Correct Answer:

Hours studied, the explanatory variable

Question 3

A scatterplot shows points scattered closely around a line that falls from upper-left to lower-right. Which description best fits the correlation?

Strong positive Strong negative Weak positive No correlation

Correct Answer:

Strong negative

Question 4

A least-squares line is given by y = 3.5x + 12, where y is predicted sales (in $1000s) and x is advertising spend (in $1000s). What is the predicted increase in sales for each extra $1000 of advertising?

$$12,000 $$3,500 $$15,500 $$3,500,000

Correct Answer:

$$3,500

Question 5

For a least-squares regression line, the correlation coefficient is r = 0.8. What is the coefficient of determination, and how is it interpreted?

0.64; about 64% of the variation in the response is explained by the regression 0.8; about 80% of the variation is explained 0.9; about 90% of the variation is explained 0.64; about 64% of points lie on the line

Correct Answer:

0.64; about 64% of the variation in the response is explained by the regression

Question 1

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Prepare with the QCAA General Maths EA Practice Questions - QCAA General Mathematics External Assessment (Queensland) Exam practice quiz. This question bank includes 100 questions covering value, degrees, line, years, and annum. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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QCAA General Maths EA Practice Questions - QCAA General Mathematics External Assessment (Queensland) Exam

This practice set contains 100 questions from the matching question bank and focuses on value, degrees, line, years, and annum. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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QCAA General Maths EA Practice Questions - QCAA General Mathematics External Assessment (Queensland) Exam

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