AQA Statistics 1 5.02 An Example using the Standard Error

[maccurran]

When do I know when to use standard error rather than just standard deviation?

[adilahj]

i don't get how you've got 0.078649, when i do it i get 0.12669882 ?

[Josephlegoman]

Brilliant videos! I would be lost without them to be honest 😂 I was wondering if you could tell me if this is the hardest these questions get as in my revision book from CGP they have some questions which are extremely difficult to solve and we havent covered how to approach them in class. Thank you :)

[RealDDGaming]

was wondering when you used the formula to get the z value. I got -6.493597. I put the values correctly so I don't know if it's the calculator or the way I put it in that's giving me the answer

[fstnukezz]

In the formula book, i cant phy the z value