Statistics for Biologists – The Chi Squared Test

19 thoughts on “Statistics for Biologists – The Chi Squared Test”

1. Lord Kira says:

Thank you

2. Tousif Habib says:

sexy explanation

3. The Stars Called, They Want Their Dust Back says:

This is excellent! I love all of biology except for all the maths, important as it may be.

4. Sara says:

i thought degrees of freedom was minus 2

5. Haya L says:

6. Astolfo says:

Biologists are so BAD at maths its fucking embarassing

7. kyle alexander says:

think you mean 56 not 46

8. A levels demystified says:

You make everything so clear.

9. Emily Maria says:

Thank you so much! Saved me a lot of stress

10. Ashutosh Sharma says:

excellent video help me lot in my practical

11. Daniel Leonard says:

How can the student have tossed the coin 100 times if both the observed values only add up to 88?

12. Imran Khan says:

In spearman's rank if i were to accept the null hypothesis because the value of r is less than the critical value would i say that; this means there is a greater 5% probability that results occurred due to chance? Thanks sir!

13. dagarax says:

Is there a mistake in the first example? Im pretty sure the sum of 46 and 42 dont equal 100…

14. Rosina Kempster says:

My EMPA is tomorrow and I was all in a panic. Thank you for explaining it in a way I understand!

15. A I says:

Absolute Legend – Thanks for positing this vid!

16. Ayomide John Godwin says:

In Spearman Rank, if the statistical test value r is less than the critical value, do I accept the null hypothesis??

17. harry potter says:

thank you so much!!!!

18. UARESIK says:

Hi, their could you explain to me what you mean by chance.
Chi squared:
– if you reject the null hypothesis what does that mean in terms of chance/ probability (i.e p<0.05 or p>0.05) and what does it mean p mean in context to the question.
How would you know if its above p is above or below 0.05?
-If you accept the null hypothesis what does that mean in terms of chance/probability.
(i.e p<0.05 or p>0.05) and what does it mean p mean in context to the question.
How would you know if its above p is above or below 0.05?

Spearman rank correlation coefficient
– if you reject the null hypothesis what does that mean in terms of chance/ probability (i.e p<0.05 or p>0.05) and what does it mean p mean in context to the question.
How would you know if its above p is above or below 0.05?
-If you accept the null hypothesis what does that mean in terms of chance/probability.
(i.e p<0.05 or p>0.05) and what does it mean p mean in context to the question.
How would you know if its above p is above or below 0.05?

Standard error and 95% confidence limits
– if you reject the null hypothesis what does that mean in terms of chance/ probability (i.e p<0.05 or p>0.05) and what does it mean p mean in context to the question.
How would you know if its above p is above or below 0.05?
-If you accept the null hypothesis what does that mean in terms of chance/probability.
(i.e p<0.05 or p>0.05) and what does it mean p mean in context to the question.
How would you know if its above p is above or below 0.05?

19. hello there says:

Thank you for explaining so simply!