Sample of size $24$ is given in a table. Find sample mean, sample standard deviation, sample median and the interquartile range.

The student must enter a number in scientific notation, with separate boxes for significand and exponent. They only get the marks if both elements are correct.

The student must enter a number in scientific notation, with separate boxes for significand and exponent. They only get the marks if both elements are correct.

Metal Anealling

A set of MCQ designed to help Level 2 Engineering students prepare/practice for the on-line GOLA test that is used to assess the C&G 2850, Level 2 Engineering, Unit 202: Engineering Principles.

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Solve for $x$: $\displaystyle \frac{a} {bx+c} + d= s$

These questions show how to use JSON data to represent structured information.

A short demonstration of when the basic simplification rules are turned on, or off.

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Example of displaying a randomly chosen image.

Shows how the \text command is rendered using the plain-text font, not the LaTeX one. Useful for displaying units of measurement and English words inside equations.

Demo question showing how to use the matrix maths functions in JavaScript.

This question shows how to display a number like "1234" as "1,234", or "1 234", using the formatNumber function.

Create a list of records for randomly-generated people. Each record contains the person's name, age, and list of hobbies.

The names and hobbies are generated from JSON data.

Get the student to upload their experimental data in a CSV file, then ask them to compute statistics on it.

CSS classes "english" and "cymraeg" apply different background colours to English and Welsh portions of text.

The custom function rectangle(width,height) draws a rectangle with the given dimensions, along with some labels.

Choose from one of several pre-defined scenarios, and set variables to the corresponding values. 

This question has three variables: city, population, and percent_like_chocolate. These differ for each city. 

Demonstrates that the marking algorithm for "match text pattern" parts doesn't put quotes around substituted strings any more.

A randomised table is contained in a div tag with the id #sales-table, so it can be styled using the CSS preamble.

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

Defines a custom function sort_by to sort a list of lists by the elements at the given index.

You could do a similar thing to sort lists of dictionaries.

Demo showing how to write a custom function in javascript.

A function which renders the factorisation of a number in LaTeX.

This question is out of date: use the currency function instead.

This question is out of date: use the currency function instead.

Show a list of the factors of a number.

Works by testing each number up to $n$ for divisibility by $n$, so won't do well with really big numbers. Certainly fast enough for numbers up to 4 or 5 digits.

Update: you can now use the conditional visibility button to do this more easily - see the documentation.

If the statement or advice for your question differs greatly depending on a random variable (for instance, if you're picking from a selection of scenarios), you only want to show content for the relevant scenario.

This question shows one way of doing that.

Choose from one of several pre-defined scenarios, and set variables to the corresponding values, defined in lists.

This question has three variables: city, population, and percent_like_chocolate. These differ for each city. We've defined a list for each variable, with the corresponding values. A variable called scenario picks a random position in the list, so the value of city, for example, is cities[scenario].