For people who do sociology or psychology - what kind of sampling is this?

I need 20 results from questionnaires, but i'll be getting results from a whole class of about 30 people





so i want to do a lucky dip and take out 20 out of the 30 results





Is that random sampling?


I tried to look for the definition online but they are far too complicated for me to understand!

For people who do sociology or psychology - what kind of sampling is this?
Yes, that would be a random sample - if everyone had the same chance of being picked. Moreover, 20 out of 30 is a good sample size for your population. If you could do all 30 you would have a census - which would be the best possible basis for your research.
Reply:yes thats random sampling.. and you dont have to use all the results.
Reply:random samplings
Reply:First of all, lets talk about what your Population really is. You have to know what group your study is trying to define. In order for a sample of classmates to be representative, you have to ask - representative of what? The general population? The Characteristics of your classmates? Are your questions geared to sample the opinions of people over thirty? All ages? Are income levels, height, weight, sex, race, health, IQ, foot size, etc. variables that affect your study? If they do, then your classmates may not be a valid POOL from which to sample at all.


Determining Random sampling sizes adequate to give you a good T-Test result depends on the size and makeup of your POOL. That is, Who is it you expect your answers to be applicable to? A sample of 20 respondents chosen at random from a total population of thirty total is certanly more than enough, - IF, IF, IF Your Hypothesis is something like " I belive that x% of the 10th grade class at Yoo Hoo High suffers from Warts.
Reply:that is random sampling...





you are getting 20 random people from the 30 people population...You do not specify who you are going to get though...thus it is at random
Reply:yes it is
Reply:Yes, provided that it is done randomly. Larger population studies are preferred however! Also remember that your population is probably limited to your age group, your restricted area, your school??? Take that into consideration when you do your final analysis. Also try to include any minorities, but that should occur naturally if you random sample.
Reply:Yes it is sort of, but you are still restricting it to the students in your class, who I guess will all be young, middle class, intelligent?


To be totally random you want to ask total strangers from a very wide prespective. Go to the park, stop people on the street, ask people in shops. Like when jurors are being picked, it's just numbers picked out from a list of everybody within so many miles of the court so it's got no relevance whats so ever.
Reply:yep. thats random
Reply:Yes, it is random sampling, as long as you provide the explanation in your methodology chapter indicating the way you have done it, its ok.
Reply:It will be if you choose them at random - literally no set plan to select them other than picking them 'out of a hat'.