This question is the one described in method 2 of the example "Apply a standard integral" in the Numbas documentation.

The student is shown a randomly chosen function to integrate. The function is one of $e^{kx}$, $x^k$, $\cos(kx)$, $\sin(kx)$, with $k$ a randomly chosen integer.

Choose one from a list to identify the function shown in a graph. The function is a randomly selected sin, cos, or tan graph with random scale factor.

Just showing how to use the stdev function from the stats extension to calculate the standard deviation of a list of numbers.

Just showing how to use the stdev function from the stats extension to calculate the standard deviation of a list of numbers.

Students are asked to move an x-axis slider representing standard deviation on a normal distribution to make the area between (mean - slider value) and (mean + slider value) equal to a certain percentage. The 3 possible percentages correspond to the mean plus or minus 1, 2 or 3 standard deviations.

Students are asked to move an x-axis slider on a normal distribution to make the area to the left of the slider equal to a certain percentage. The 6 possible percentages correspond to the mean plus or minus 1, 2 or 3 standard deviations.

Compute tables of Hamming distances in given codes, then determine which codes are equivalent.

Esercizio che chiede di calcolare la distanza e il punto medio tra due punti di coordinate intere assegnate. La distanza è sempre un numero naturale.

Student ma za zadanie zbudować szereg rozdzielczy, obliczyć średnią i odchylenie standardowe, określić kierunek asymetrii oraz koncentrację rozkładu.

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Laplace of constants and powers of t

rebelmaths

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Calculate confidence interval for the mean, sample variance adaptive marking

Finding the confidence interval at either 90%, 95% or 99% for the mean given the mean and standard deviation of a sample. The population variance is not given and so the t test has to be used. Various scenarios are included.

Compute a 95% confidence interval for the population mean given a small sample, and compare it with a confidence interval for a different population.

Two ordered data sets, each with 10 numbers. Find the sample standard deviation for each and for their sum.

A normal curve is displayed. Mean and standard deviation can be set by sliders.

Questions testing understanding of the precedence of operators using BIDMAS applied to integers.

Using geogebra to draw lines tangent to a curve and calculate their gradient.

Calculate distance given speed and time.

One number as a percentage of another.  Biology context. Includes standard form.
Realistic values.

Convert numbers between 0 and 1 from standard form/scientific notation.

Convert numbers greater than 1 from standard form/scientific notation.

Convert numbers greater than 1 into standard form/scientific notation.

Convert numbers between 0 and 1 intro standard form/scientific notation.

Given speed and time, calculate distance.

Notation for mean and standard deviation of population and sample.

Statistical notation including mean, standard deviation, probability, correlation coefficient, chi-square and others.