1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Anni [7]
1 year ago
15

which of the following is an example of stratified sampling? in order to assess students' satisfaction with the food establishme

nt on campus, the first 50 students who came out of the student center were interviewed. the human resources department of a large bank wanted to assess the job satisfaction of the bank's workers. the department chose four of the bank's branches at random and used all of the workers in those four branches as the subjects for the study. a sample of 351 people called a radio show to express their opinions about the verdict in a murder trial. a health educator wanted to study the sleeping habits of the undergraduate students in her university. for her study, the researcher chose a simple random sample of size 150 from each of the classes (150 freshmen, 150 sophomores, 150 juniors, and 150 seniors) for a total of 600 sampled students. a poll asked a random sample of 1,112 adults whether they believe that the use of marijuana for medical reasons should be legalized.
Mathematics
1 answer:
Serhud [2]1 year ago
4 0

The example of stratified sampling is a health educator wanted to study the sleeping habits of the undergraduate students in her study.

For her study, the researcher chose a simple random sample of size 150 from each of the classes (150 freshmen, 150 sophomores, 150 juniors, and 150 seniors) for a total of 600 sampled students. a poll asked a random sample of 1,112 adults whether they believe that the use of marijuana for medical reasons should be legalized.

<u>Sampling:</u>

In statistics, quality assurance, and research methodologies, sampling is the selection of a subset of individuals (statistical sample) from a statistical population in order to estimate characteristics of the population as a whole. A statistician tries to collect a representative sample of the population in question. Sampling is less costly than measuring the entire population, provides faster data collection, and can provide insight when the entire population cannot be measured.

<u>Stratified Sampling:</u>

When the population embraces a number of distinct categories, the frame can be organized by these categories into separate "strata." Each stratum is then sampled as an independent sub-population, out of which individual elements can be randomly selected. The ratio of the size of this random selection (or sample) to the size of the population is called a sampling fraction. There are several potential benefits to stratified sampling.

There are, however, some potential drawbacks to using stratified sampling.

First, identifying strata and implementing such an approach can increase the cost and complexity of sample selection, as well as leading to increased complexity of population estimates.

Second, when examining multiple criteria, stratifying variables may be related to some, but not to others, further complicating the design, and potentially reducing the utility of the strata.

Finally, in some cases (such as designs with a large number of strata, or those with a specified minimum sample size per group), stratified sampling can potentially require a larger sample than would other methods (although in most cases, the required sample size would be no larger than would be required for simple random sampling).

Learn more about Stratified Sampling:

brainly.com/question/20544692

#SPJ4

You might be interested in
Can someone help me plzzzzzzzzz I’m failing math rn
zysi [14]

Answer:

number 1 is b

Step-by-step explanation:

4 0
3 years ago
The product of 7 ​, and a number increased by 8 ​, is 105. What is the​ number?
sertanlavr [38]

Answer:

97

Step-by-step explanation:

8 0
3 years ago
Y &gt; − 3/4 x + 3 <br>please help​
pshichka [43]

Answer:

D

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Q2. Draw the following vectors and determine the resultant
lys-0071 [83]
Spungbib don failed math ph nah

5 0
3 years ago
A​ long-distance telephone company charges a rate of cents per minute or a ​-cent minimum charge per completed​ call, whichever
LiRa [457]

Answer: 50 cents

Step-by-step explanation:

Company charges 8 cents per call and the call in question is 3 minutes. Cost is;

= 3 * 8

= 24 cents

Company however stipulates that a call is 8 cents per minute or a 50​-cent minimum charge per completed​ call, whichever is greater.

<em>50 cents is greater than the per minute total charge of 24 cents so the cost will be 50 cents.</em>

8 0
3 years ago
Other questions:
  • Samantha and Mia each left Julia’s house at the same time. Mia walked north at 7 kilometers per hour. Samantha ran west at 11 ki
    10·2 answers
  • I was wanting to know what is (+4)+(+3)?
    8·1 answer
  • Which equation is correctly rewritten to solve for y?
    6·1 answer
  • How do you write 3804 in words
    11·2 answers
  • Y-3=1/2 (x+4) in standard form
    6·2 answers
  • Solve for r , what is r equal to ?
    9·1 answer
  • What value of k will make this relationship NOT a function?
    11·1 answer
  • Write the mixed number as an improper fraction.
    8·2 answers
  • Find the value<br>of<br>(3x + 3y)^2<br>If xy = =-2 and x^2+y^2=5​
    11·1 answer
  • Select the correct answer from each drop-down menu.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!