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Adding and subtracting surds. Parts b) and c) involve simplification of surds.

Conversions of units

This question asks a student to draw a straight line graph by dragging points.

This question asks a student to draw a straight line graph by dragging points.

This question asks a student to draw a straight line graph by dragging points.

This question asks a student to draw a straight line graph by dragging points.

This question asks a student to draw a straight line graph by dragging points.

This question asks a student to draw a straight line graph by dragging points.

Horizontal and vertical shifts and scales of a random cubic spline

Horizontal and vertical shifts and scales of a random cubic spline

Horizontal and vertical shifts and scales of a random cubic spline

Horizontal and vertical shifts and scales of a random cubic spline

Horizontal and vertical shifts and scales of a random cubic spline

Horizontal and vertical shifts and scales of a random cubic spline

Horizontal and vertical shifts and scales of a random cubic spline

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5 questions on  confidence intervals and hypothesis testing. Population variance given, z-test. Not given, t-test.

Basic circuit analysis questions

A silly question about chicken names to try out numbas

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Zadanie pozwala ocenić umiejętność studenta w zakresie: formułowania hipotez, przeprowadzania testu istotności, wnioskowania statystycznego.

Zmienne losowe: dane surowe

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Questions on addition, subtraction, multiplication and powers of negative numbers.

A demonstration of the exam-level variable override feature. The student is shown the same question several times, but each instance is set up to suggest a different error in the process of computing the median of a sample. The first instance is very easy, and the last is pretty hard.

A question designed to demonstrate the exam-level variable overrides feature. The student must work out the median of a given sample. The exam can override size of the sample, the range of numbers to pick, and whether the sample should be shown to the student in increasing order.