Data collection Flashcards
sampling, the large data set
1
Q
what is simple random sampling
A
2
Q
what is systematic sampling
A
3
Q
what is stratified sampling
A
4
Q
what is quota sampling
A
5
Q
what is opportunity sampling
A
6
Q
define population
A
a population is a collection of all items
7
Q
define a statistic
A
(a random variable) that is a function of the sample which contains no unknown quantities/parameters
8
Q
ask hannah
A
about what to know for large data sets
9
Q
what is a census
A
method of observing and measuring every member of a population, it is used to collect data from a whole population rather than just a sample
negatives:
- if the population is large it can be difficult to collect and process so much information
