Spearman's Rank Correlation - A Level Biology

One of the statistical tests used in A Level Biology, Spearman’s Rank Correlation is used to check whether there is a link/correlation between two sets of data.
This step by step video will show you how to:
- understand why you need to use a Spearman’s rank correlation
- ascertain and state your null hypothesis
- carry out the statistical test
- find the critical value at p=0.05 (and what that means)
- write a conclusion for your findings.
For supporting workpack visit biologybreakdown.co.uk/product/4.
For more GCSE and A-Level content visit biologybreakdown.co.uk where you will find detailed workpacks with consolidation, knowledge recall and application questions and answers.
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[@perfection9630]

Really clear and helpful video. Thank you!🖤

[@ironman8961]

this was super helpful! Thank you!

[@Impressb]

You made this sound so easy...I will be watching other videos from you....

[@abhishekhowtar8785]

Thank you.

[@smsmsmsmsmsm]

Thank you so much :)

[@chisomezekwe6431]

thank you this video really helped with my revision!

[@BiologyBreakdownwithMrsH]

Glad it was useful! Good luck in your exams ☘️🤞

[@ermi1443]

Thank you

[@bethansturdy519]

Amazing!

[@uroojfatima551]

Amazing videos, these are really helpful i will recommend this page to my classmates aswell. Such easy yet detailed explanations!!

[@BiologyBreakdownwithMrsH]

Thank you! 🙏😊

[@Hello-yp8vt]

You are an absolute gem

[@BiologyBreakdownwithMrsH]

😊

[@ik7150]

I love this thank you

[@BiologyBreakdownwithMrsH]

😊

[@fahimfaisal5576]

Thank you!

[@BiologyBreakdownwithMrsH]

☘️

[@mojo6286]

Very helpful video! Would this formula be given in the exam?

[@BiologyBreakdownwithMrsH]

Yes, you will be provided with the formulae for the statistical tests including standard deviation 😊

[@mojo6286]

@@BiologyBreakdownwithMrsH thanks!

[@_Anti_Communist_]

Nice Video! Also, I was wondering, is Spearman's Rank a form of primary or secondary data? I assume if the data in your Spearman's Rank is gathered by you entirely then it would classify as primary, and that if the data in the Spearman's Rank is from secondary sources (like from the internet) then its secondary? Or not?

[@BiologyBreakdownwithMrsH]

The data is not real, I have made it up just for the purpose of teaching the skills of completing the test 😊. We don’t teach about primary and secondary data on our specification but it is good to be aware 😊

[@yy4770]

great video

[@BiologyBreakdownwithMrsH]

Thank you! 😊

[@rabbiatariq1644]

we are not goinng to find the degrees of freedom?

[@BiologyBreakdownwithMrsH]

No degree of freedom for the Spearman’s Rank correlation. Just n 😊

[@sabakaid8194]

Don’t you rank the values from lowest to highest

[@BiologyBreakdownwithMrsH]

Hi, you can do! As long as you rank both columns the same way i.e both lowest to highest or both highest to lowest, you will end up with the same answer 😊

[@n5803]

Great video, but the formula you used cannot be used when tied values occur. If such values occur, the formula for Pearson's r has to be used with the ranked values. :) (Actually this formula you used is a modified version of Pearson's r with ranked values with the assumption that no tied values are present.

[@BiologyBreakdownwithMrsH]

Fab! You know more than I do 😊 this only goes up to A level Biology standard, I try to avoid information they don’t need to know as the course is so intense 😭

[@Jihad_M1312]

Thank you!! Amazing video short and useful! My exam in three days!! Thanks Mrs H! ♥️

[@BiologyBreakdownwithMrsH]

Good luck! 🍀

[@Jihad_M1312]

@@BiologyBreakdownwithMrsH Thanks!!!