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weeeeeb [17]
3 years ago
15

Cluster sampling and stratified sampling both involve selecting subjects in subgroups of the population. what is the difference

between those two types of​ sampling?
Mathematics
2 answers:
Crank3 years ago
7 0

Cluster sampling and stratified sampling both involve selecting subjects in subgroups of the population. what is the difference between those two types of​ sampling?

Answer: Cluster sampling and stratified sampling both involve selecting subjects in subgroups of the population. But the difference is that in cluster sampling all the subjects of the selected subgroup are studied. While in stratified sampling, only randomly selected subjects of subgroups are studied.

Cluster Sampling is a probability sampling method where the target population is divided into clusters. Some of these clusters are selected randomly for sampling and all the members are studied under each randomly selected cluster.

Stratified Sampling is a probability sampling method, in which a population is divided into unique, homogeneous strata, members from these strata are randomly selected to form a sample.

balu736 [363]3 years ago
3 0

Answer:

In clustering sampling, the researcher test whole groups of people. In stratified, it's systematic choosing.

A census could be: which literary character is more popular in America: Harry potter or Sam Gamgee (Lord of the Rings)?  

First you would choose states to do the testing in, then cities. some of the clusters of people you choose will be tested as a whole (cluster testing). then, you would take random people from the other groups which were not tested as a whole to answer the question. (stratified sampling)

For both methods, divide a population into groups.

For cluster sampling, select all of the members in some of the groups.

For stratified sampling, select a random sample from each group.

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Use the Pythagorean Theorem to solve the given problem. Hint: Draw a picture or diagram.
Pepsi [2]

Answer:

Solution 2. A right triangle is formed with the bottom of the flagpole, the snapped part, and the ground. One leg is of length $1 ...

Missing: picture ‎way ‎barely

Step-by-step explanation:

A flagpole is originally $5$ meters tall. A hurricane snaps the flagpole at a point $x$ meters above the ground so that the upper part, still attached to the stump, touches the ground $1$ meter away from the base. What is $x$?

$\text{(A) } 2.0 \qquad \text{(B) } 2.1 \qquad \text{(C) } 2.2 \qquad \text{(D) } 2.4 \qquad \text{(E) } 2.5$

Solution 1

The broken flagpole forms a right triangle with legs $1$ and $x$, and hypotenuse $5-x$. The Pythagorean theorem now states that $1^2 + x^2 = (5-x)^2$, hence $10x = 24$, and $x=\boxed{2.4}$.

(Note that the resulting triangle is the well-known $5-12-13$ right triangle, scaled by $1/5$.)

Solution 2

A right triangle is formed with the bottom of the flagpole, the snapped part, and the g

5 0
2 years ago
PLEASE HELP ME IBEG ANYBODY PLEASE :(
djyliett [7]
1)
csc Ф=hypotenuse / opposite=15/9=5/3
<span>
Answer: csc Ф=5/3</span>

2)
answer: the side CT is the hypotenuse because it is in front of the right angle.

3)
cotan Ф=adjacent/ opposite=12/9=4/3

answer: cotan Ф=4/3

4)
sin (-360º)=sin (0º+(-1)(360º)=sin 0º=0

Answer: sin (-360)=0

5)
cos (-90º)= cos (90º)=0=0

answer: cos (-90º)=0



8 0
3 years ago
Christina can paint a chair in
Maurinko [17]

Answer:

<em>2</em>

Step-by-step explanation:

<em>I think because I had the same kind of question and the answer was 2 </em><em>,</em>

<em>hopefu</em><em>lly</em><em> </em><em>it</em><em> </em><em>helps</em><em> </em><em>u</em><em /><em>☺️</em>

6 0
3 years ago
the perimeter of the floor of a room is 18 metre and its height is 3 cm what is the area of 4 walls of the room​
Lina20 [59]

Note: The height of the room must be 3 m instead of 3 cm because 3 cm is too small and it cannot be the height of a room.

Given:

Perimeter of the floor of a room = 18 metre

Height of the room = 3 metre

To find:

The area of 4 walls of the room.

Solution:

We know that, the area of 4 walls of the room is the curved surface area of the cuboid room.

The curved surface area of the cuboid is

C.S.A.=2h(l+b)

Where, h is height, l is length and b is breadth.

Perimeter of the rectangular base is 2(l+b). So,

C.S.A.=\text{Perimeter of the base} \times h

Putting the given values, we get

C.S.A.=18\times 3

C.S.A.=54

Therefore, the area of 4 walls of the room is 54 sq. metres.

7 0
3 years ago
Find the circumference of a circle with a radius of 8 inches round to the nearest 10th
Mkey [24]

Is the answer to your question 9?

7 0
3 years ago
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