Cambridge IGCSE Mathematics practice

exam practice - 1. Create and analyze scatter diagrams, ensuring that plotted points are distinctly marked, such as with small crosses (×). 2. Recognize the meanings of positive, negative, and zero correlation. 3. Draw, interpret, and apply a line of best fit: it should be a single straight line drawn by observation, covering the entire data set, and while it doesn't have to align perfectly with any points, there should be a roughly equal distribution of points on either side of the line throughout its length. - Scatter diagrams

Try the question first, then check the answer and practise the same topic again.