A-level biology STATISTICS HELP: The Correlation Coefficient, worked example of Spearman's Rank

For help with knowing when to select each statistic, understanding critical values and P values and how to write a conclusion. This video focuses on the correlation coefficient. I show you how to do the statistic and example questions of what you could be asked to do in an exam.
For past paper questions linked to this topic click the link
missestruch.co.uk/
Any questions or feedback please comment below :) Don't forget to subscribe.
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[@daisylawrence7447]

This makes much more sense now, thank you!

[@MissEstruchBiology]

You're welcome 😊

[@shafinbepary2000]

amazing summary of stats skills in bio

[@lucysmith7029]

So useful! Thank you!!

[@MissEstruchBiology]

Thanks for the comment :) Glad you found it helpful.

[@HacksawJack]

Thank you this video was very informative!

[@MissEstruchBiology]

Glad you enjoyed it! Thank you

[@ilhamkhaleel8366]

Thank you, very informative

[@MissEstruchBiology]

I hope they're helpful for you 😊

[@mariodluelmo9060]

thank you, it was useful 😃

[@MissEstruchBiology]

😁😁 glad it helped

[@mohablabidi3698]

Amazing video, keep it up

[@MissEstruchBiology]

thank you

[@HUVideoer]

thanks, also great for Marine science :)

[@MissEstruchBiology]

Ah so glad! You're welcome!!!

[@RParsons]

Is it the Pearson's or Spearman's version needed as they have different ways to find the degrees of freedom. Are students expected to calculate the degrees of freedom for the coefficient correlation as in the Collins textbook it is not explained at all. Thanks

[@MissEstruchBiology]

For AQA df is just number of pairs for spearmans

[@rachelparsons9751]

Thank you!

[@sabastyles1967]

Hi, Unfortunately I can't reach your notes. Could u kindly send the link you mentioned in the video?

[@MissEstruchBiology]

Hey, they are at missestruch.co.uk

[@yaniahmed752]

This is so helpful thank you, however, the link doesn't seem to work

[@MissEstruchBiology]

Thank you! I've updated the link 😊

[@deni7699]

@@MissEstruchBiology Hi miss, it still says error for me :(

[@MissEstruchBiology]

missestruch.co.uk/

[@elijah2859]

Hi miss Estruch, which statistical tests will be on AQA biology paper 1?

[@MissEstruchBiology]

Hello
any of the 3 could come up on any paper ( correlation coefficient, t test or chi squared)

[@elijah2859]

@@MissEstruchBiology oh okayy thanks x

[@mdffmfff9378]

if spearmans rank of correlaiton coefficient measures associaiton rather than correlaiton between two variables, why write null hypotheis with correlation, shoudlnt it be association, that's what we do in maths a level!

[@angelstar7775]

in the exam would we be expected to use equation

[@MissEstruchBiology]

Hello,
No, you wouldn't be asked to calculate the statistic, just to analyse and conclude what it shows you.

[@Samantha2431___]

do we need to know the difference between pearsons and spearmans for aqa ?

[@MissEstruchBiology]

No, as you don't have to do the calculation in the exam

[@Samantha2431___]

@@MissEstruchBiology okay thank you