Cluster sampling and stratified sampling both involve selecting subjects in subgroups of population. What's the difference between those two types of sampling?

Explanation:

In cluster sampling the target population is divided into clusters. Some of the clusters are selected randomly and subjects are also selected randomly.

In stratified sampling the target population is divided into homogenous strata and the members are selected randomly.

Cluster sampling and stratified sampling both processes of sampling involves the selecting the subjects in the subgroups of the desire population. In cluster sampling all the subjects of the subgroup are studied, whereas in the case of the stratified sampling only the randomly selected subjects of the subgroups are chosen and studied.

uh, mate. what's the question?

.how are johansson’s photographs different than most others?

because his photographs are based on photo realism. photos where you will need a brief moment to think to figure it out the trick of it.

2.what makes his photographs seem real?

sometimes the perspective is the illusion. different pieces of reality and put them all together. and things that we don’t even think about.

3.what rules does johansson follow in his photography?

photos combined should have the same perspective. photos combined should have the same type of light.making it impossible to distinguish where the different images begin and end by making it seamless.

4.which of johansson’s creations did you like the best? why?

the big fish under the water with the house on top of the rock. because it's really hard to create pictures like that one, it requires a very precise moment to snap the picture