Embedded Files
Section overview:
Section overview:
The PowerPoint below provides an overview of material in this topic, including explanations and examples - for the full experience, open in a new tab then download it. All exercise references are to the new specification Pearson textbook - you can access the digital version for free or buy your own for extra practice.
Written summary notes are also given below for quick revision of key points, plus a selection of exam-style questions (with solutions) to test your understanding.
S2-Chp1-RegCorrHypothesisTests.pptxSpreadsheet for hypothesis testing example (see PPT):
S2-Chp1-PMCC_CorrelationDemo.xlsxThe Datasaurus Dozen:
Despite their appearances, each of the above datasets has the same x/y mean, x/y standard deviation and correlation coefficient. Learn more about The Datasaurus Dozen here and watch the video at the bottom of the page for a peek behind the scenes.
Notes:
Notes:
Section 1 Notes - Linearising exponential functions [Repeated from Y12 Pure: Exponentials and Logarithms]
Section 2 Notes - Measuring correlation [Video tutorial]
Section 3 Notes - Hypothesis testing for zero correlation [Video tutorial]
Summary questions:
Summary questions:
Extra resources:
Extra resources:
Use the videos below to support your understanding of the topic. The ones on the left are specific to the course, building up to demos of exam-style questions; the ones on the right are for your own amusement, although the alternative outlook may provide you with a deeper overall understanding and appreciation of the topic.
Playlist - Hypothesis testing for zero correlation [Includes Y12 content on general hypothesis testing]
Extra fun! More Datasaurus Dozen...
Interactive simulation:
Interactive simulation:
See regression in action!
Explore how the correlation coefficient and regression line are affected as you change your points, or take a look ta some real-world examples under the drop-down menu.
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