PMCC
Just a quick question re: the PMCC. I understand that it ranges from -1 to 1, being negative and positive correlation respectively, but don't understand what the r value and significance level have to do with it? Exam questions always seem to include this data, but what exactly are you supposed to do with this?
Reply 1
21
Original post by Hejavi431
Just a quick question re: the PMCC. I understand that it ranges from -1 to 1, being negative and positive correlation respectively, but don't understand what the r value and significance level have to do with it? Exam questions always seem to include this data, but what exactly are you supposed to do with this?
The r value is typically what you think of as the correlation coefficient and the significance level represents a hypothesis test, where the null hypothesis is no/zero correlation and youre testing to see if there is (alternative hypothesis) a significant correlation
https://mmerevise.co.uk/a-level-maths-revision/product-moment-correlation-coefficient/
Quick Reply
Related discussions
- Normal hypothesis testing
- how to revise a level maths ?
- Edexcel GCSE Statistics Paper 2 Higher Tier (1ST0 2H) - 17th June 2024 [Exam Chat]
- A level statistics edexcel
- Edexcel A-level Statistics Paper 1 - 5th June 2025 [Exam Chat]
- Edexcel A-level Statistics Paper 2 - 10th June 2025 [Exam Chat]
- AQA A-level Mathematics Paper 3 (7357/3) - 20th June 2024 [Exam Chat]
- OCR MEI Statistics Minor 14th June 2024
- Year 13 A-Level Comeback 🙏🏽🙏🏽🙏🏽
- ──★ Liqht's A-level Journey ★──
- robin's a levels study blog [the final slog]
- Edexcel A Level Mathematics Paper 3 (9MA0 03) - 20th June 2024 [Exam Chat]
- Edexcel A Level Mathematics Paper 2 (9MA0 02) - 11th June 2024 [Exam Chat]
Latest
Trending
Last reply 4 days ago
Edexcel AS Level Maths May 15th 2025 Pure Paper 1 + Unofficial Mark SchemeMaths Study Help
59
157
Last reply 1 month ago
Further mechanics 2 options overlapping with physics rather than stats?