A-Level Psychology (AQA): Probability and Significance

The first of 3 lessons on statistical testing.
Cover the basics of null vs. alternate hypotheses; critical and calculated values; probability and significance; and how to used a critical values table to establish significance.
Ideal for first time learning and for revision.

[@cassinav09867]

i have learnt more from this video, than all of my lessons, i just never got it, but somehow you made it make sense. THANK YOU

[@julietteroach6540]

watching this the night before my exam... an actual life saver!!! 🙏🙏🙏

[@lolxmi_2344]

Such a good video, explained everything perfectly

[@smcartledge2723]

Thanks!

[@arjun_makhecha]

I always get excited when you say 'right guys'. Makes me so ready to learn about psychology😁

[@charlieroberts4354]

This guys a legend

[@xolargraal1319]

Saved my a level grade !

[@sandhyathapa6605]

these videos are amazing!! i wish i found the quicker!

[@smcartledge2723]

Thanks.
Glad they were useful.

[@ade6609]

Thank you very much sir for this video. please can you make a video interpreting the advance warning for Aqa psychology 2022

[@madeleinecohen4824]

thank you so much

[@bsgames2474]

legend

[@aylaaamir308]

are u gonna do a vid on reliability and validity ?

[@smcartledge2723]

Yep, I am working to fill all the gaps at the minute. Hopefully reliability and validity won't be long.

[@AR_shorts10]

For critical value which n value we have to see and what is the critical value of S

[@smcartledge2723]

The N value is your number of participants. The calculated value of S is the less frequently occurring sign. You can see it in my video here ua-cam.com/video/Kgzn4Rq40kA/v-deo.html

[@user-lw7so7de6n]

「こんなにいいとは思えない」、

[@emma.LM50]

i’ve listened to this quite a few times now, but i just can’t seem to wrap my head around standard level of significance?

[@happydays5507]

In the 3 videos is that all the information we need for the statistical tests if it was to come up in an exam? Thanks

[@smcartledge2723]

Yep - they are all you need

[@happydays5507]

@@smcartledge2723 Okay! Thanks so much!

[@lolxmi_2344]

Help! What is degrees of freedom?

[@smcartledge2723]

It is the same as your N value - it represents the size of your sample. But it is only used for certain tests, like “Chi2”.
You will either be given the df value or be told how to calculate it. Just remember, like N, it represents the size of your sample.

[@lolxmi_2344]

@@smcartledge2723 thanks so much, it came up on paper one and I just assumed it was N because of the wording of the question but wasn’t sure. Saviour!

[@brendathorn6594]

i love you

[@peamutbubber]

where maths comes in handy 😈