This PowerPoint provides an overview and step-by-step method for calculating standard deviation and a value for t using a set of sample data. The formula and notation used are in line with the AQA GCE Human Biology Students' Statistics Sheet (version 2.2). Spreadsheet included to provide raw data, if required.

<p>This PowerPoint provides an overview and step-by-step method for calculating Chi-squared. It is illustrated with 3 examples, including one using contingency tables. The formula and notation used are in line with the AQA GCE Human Biology Students’ Statistics Sheet (version 2.2).</p>

This Powerpoint explains visually how photosynthesis and respiration work and then leads students visually through the carbon cycle, breaking it down into separate processes. One slide can be printed for students to label.

I have adapted the excellent resource from user Astronyxis to fit the formula and notation used in the AQA GCE Human Biology Students' Statistics Sheet (version 2.2). This PowerPoint provides an overview and step-by-step method for calculating Pearson&'s Correlation Coeffient using two different sets of sample data.

This PowerPoint provides an overview and step-by-step method for calculating Pearson's Correlation Coeffient using a set of sample data. The formula and notation used are in line with the AQA GCE Human Biology Students&' Statistics Sheet (version 2.2).

This PowerPoint provides an overview and step-by-step method for calculating the Standard Error with 95% confidence limits using a set of sample data. The formula and notation used are in line with the AQA GCE Human Biology Students' Statistics Sheet (version 2.2). Spreadsheet now included providing the raw data.