First day of School...

This evening was my first day of School..
was really excited and nervous at the same time..

As I am taking Bachelor of Sci (Hons) in Marketing..today I had my first lesson which is Quantitative Methods In Information Management.

When the lecturer Sebastian Koh started to speak and run thru what he will be covering.. all those alien terms..kind of frightened me off...
what Signma, Means, Standard Deviation..Parameter...
Wah...my head goes ?? ..???...???????..

Got no clue what he is talking about..hahaha..nearly fainted..hahaha..
It got better when he started to go into today's lesson...
started to make some sense finally...
but no time to really digest what he teach immediately...

Then he gave us 20 mins break..and there after the break..
we were 'forced' to go into groups to discuss the topic he wrote on the board after reading the relevant pages..
we were supposed to kind of run thru everything and apply all that he taught before the break immediately and do a presentation to the class.

I kind of discussed with my group and analyse with them..write out all the structure and key points ..which they thereafter told me to present saying since I seems to know better and told them all these..which...I told them no no..get someone else..cuz there was one of it which I wasn't very sure how to explain..
at the end..one of the guy went up and we just backed him up to explain by the side..
we didn't really do well..I guess..lack of self-confidence and shy..
Well..things will get better when we know the class better..its our first class after all....

I must make sure I fully understand if I were to do the presentation the next round.

Things got clearer after the presentation..as we watch each of the groups present and our lecturer concluded everything after that..

Hey..you guys..can anyone explain to me..what it means by "both random and simple random surveys requires there to be a list of names or perhaps maps to sample from. This list is usually called a frame. Quota sampling does not carry this requirement."

I dun quite understand.
Cuz under Quota Sample it says Interviewers are given quota of number they must contact and interview by sex, social class, age and other variable relevant to the investigation being undertaken.

Then isn't it consider a frame already in Quota Sample?

And since its Random for Random and simple Random survey..why is a frame needed when you only pick randomly? Whereas Quota sample picks from specific group?

I am confused.

Anyone can answer pls advise me.
Thank u.

I know this is not so important and won't really come out for exam..but I just want to understand everything which I am taught.
Since I am a perfectionist..I feel like something is chocking me..causing me indigestion if I dun clear my doubt..I can't sleep well..
So help me pls..
thank u..

nite..very tired..hopefully I can get to sleep even with this thing up in my throat..

p.s. u know something..this lecturer is really something..
just first lesson..he remembered everyone's name already..he memorise it immediately when we write our names down in a piece of paper before our attendence book arrived. Impressive...