Answer:
Stratified sampling
Step-by-step explanation:
Samples may be classified as:
Convenient: Sample drawn from a conveniently available pool.
Random: Basically, put all the options into a hat and drawn some of them.
Systematic: Every kth element is taken. For example, you want to survey something on the street, you interview every 5th person, for example.
Cluster: Divides population into groups, called clusters, and each element in the cluster is surveyed.
Stratified: Also divides the population into groups. However, then only some elements of the group are surveyed.
In this question:
Population divided into groups, and random samples are drawn from the groups. This is a mark of stratified sampling.
4 because you take 2²= 2 times 2 = 4
Answer:
5 is greater than equal to 5. So f(5)=5+8=13
Step-by-step explanation:
A. more homework better scores
b. about 60 score
c. standard score
Answer:
Step-by-step explanation:
-4 - 10 + 9 = -14 + 9 = -5
