Recent questions in Sampling Frame

College StatisticsAnswered question

Mollie Wise 2022-11-25

Find the period of a 100ft building with special steel moment frames

College StatisticsAnswered question

Uroskopieulm 2022-11-16

A sampling frame should have the following characteristics:

i) It is not necessary to include all members of the population on the list

ii. The information should be correct and up to date.

iii. Each member of the population appears on the list only once. Which of the above statement/s is /are incorrect?

i) It is not necessary to include all members of the population on the list

ii. The information should be correct and up to date.

iii. Each member of the population appears on the list only once. Which of the above statement/s is /are incorrect?

College StatisticsAnswered question

Aliyah Thompson 2022-11-11

The American Academy of Pediatrics wants to conduct a survey of recently graduated family practitioners to assess why they did not choose pediatrics for their specialization. Provide a definition of the population, suggest a sampling frame, and indicate the appropriate sampling unit.

Please do not provide definitions of the words, but instead describing each word that it pertains to conducting the survey.

Please do not provide definitions of the words, but instead describing each word that it pertains to conducting the survey.

College StatisticsAnswered question

figoveck38 2022-11-05

A sample of households in a community is selected from the telephone directory. In this community, 4% of households have no telephone, 10% have only cell phones, and another 25% have unlisted phone numbers.

The telephone directory in the above setting is considered a...

a. contracted source

b. sampling frame

c. parameter level

d. descriptor

The telephone directory in the above setting is considered a...

a. contracted source

b. sampling frame

c. parameter level

d. descriptor

College StatisticsAnswered question

caschaillo7 2022-10-25

Which of the following statements are false?

A. In enumerative studies, interest is focused on a finite, identifiable, unchanging collection of individuals or objects that make up a population.

B. "All companies listed on the New York Stock Exchange" is an example of a sample. C. A sampling frame is a listing of the individuals or objects to be sampled.

D. "All possible yields (in grams) from a certain chemical reaction carried out in a laboratory" is an example of conceptual or hypothetical population.

A. In enumerative studies, interest is focused on a finite, identifiable, unchanging collection of individuals or objects that make up a population.

B. "All companies listed on the New York Stock Exchange" is an example of a sample. C. A sampling frame is a listing of the individuals or objects to be sampled.

D. "All possible yields (in grams) from a certain chemical reaction carried out in a laboratory" is an example of conceptual or hypothetical population.

College StatisticsAnswered question

Maverick Avery 2022-10-16

A potted plant rests on a window frame above the ground. The potted plant is off the frame and falls from rest to the grass below 1.93 s later.

a) How fast is the pot traveling just before impact with the grass?

b) How far did the pot fall?

a) How fast is the pot traveling just before impact with the grass?

b) How far did the pot fall?

College StatisticsAnswered question

Bavikhove8h 2022-10-08

Which of the following is a probabilistic sampling approach that does not require the use of a sampling frame?

A) Stratified

B) Frame-free

C) Convenience

D) Skipped step

E) Judgment

F) Intercept

G) Cluster

H) Exploratory

A) Stratified

B) Frame-free

C) Convenience

D) Skipped step

E) Judgment

F) Intercept

G) Cluster

H) Exploratory

College StatisticsAnswered question

imchasou 2022-09-26

What is the statistics processes stages and how do we select a simple random ?

College StatisticsAnswered question

Will Underwood 2022-09-22

A researcher is interested in the cumulative grade point average (CGPA) of students who enrolled in a Statistics course this semester. There are three groups, namely A, B and C which consist of 30 students for group A, 40 students for Group B and 30 students for group C. A sample of 50 students are randomly selected in this study.

i) State the population and sampling frame.

ii) State the variable of interest.

iii) Give the appropriate sampling technique to be used for this study.

iv) Calculate the number of students that should be selected from each group.

v) Suggest the data collection method for this study. Give ONE advantage and ONE disadvantage.

i) State the population and sampling frame.

ii) State the variable of interest.

iii) Give the appropriate sampling technique to be used for this study.

iv) Calculate the number of students that should be selected from each group.

v) Suggest the data collection method for this study. Give ONE advantage and ONE disadvantage.

College StatisticsOpen question

Mariyah Best 2022-08-22

A city's telephone book lists 300,000 people. If the telephone book is the frame for a study, how large would the sample size be if systematic sampling were done on every 100th person?

College StatisticsOpen question

Claire Calderon 2022-08-20

A superintendent wants to survey teachers in his district to determine their opinions on the new school calendar. There are 14 different schools located in this school district. The superintendent randomly picks 4 of the 14 schools. At each of the 4 selected schools, they randomly pick 10 teachers to survey (for a total of 40 teachers). What kind of study design is this?

a.Cluster Sample

b.Block Sample

c.Multistage Sample

d.Stratified Sample

e.Simple Random Sample

a.Cluster Sample

b.Block Sample

c.Multistage Sample

d.Stratified Sample

e.Simple Random Sample

College StatisticsOpen question

Anito49 2022-08-19

Horace Horsecollar is interested in the opinion of vacationers at Disney World. He creates a short survey and administers it to every 1000th person to enter the park, starting with the 364th person. What method did Horace use to select his sample?

1) Stratified

2) Simple Random Sample

3) Systematic

1) Stratified

2) Simple Random Sample

3) Systematic

College StatisticsOpen question

joyoshibb 2022-08-18

The Department of Health is conducting random drug testing in a barangay in relation to their age. You are the officer assigned to conduct the test in your own barangay. You only need 10 randomly selected students to be tested. You are to give instructions to the school director on how you are going to select the 10 students by applying your knowledge of the methods of sampling. To do the task well, you need to ensure that the sample is selected randomly. From a sample of 10, you take a sample size of 2.

TASKS:

A. Identify the appropriate method of sampling in the given situation and explain how you are going to do it.

B. Create a probability distribution that includes the list of your possible samples.

C. Compute for the mean, variance, and standard deviation of the sampling distribution of the means.

D. Construct a probability histogram of your sampling distribution.

TASKS:

A. Identify the appropriate method of sampling in the given situation and explain how you are going to do it.

B. Create a probability distribution that includes the list of your possible samples.

C. Compute for the mean, variance, and standard deviation of the sampling distribution of the means.

D. Construct a probability histogram of your sampling distribution.

College StatisticsAnswered question

garkochenvz 2022-08-11

Homer Simpson is interested in studying the ratio of the various colors of sprinkles on Lard Lad donuts. To conduct his study, Homer purchases three of each variety of donut they make and counts the sprinkles on them. What method did Homer use to select his sample?

1. Stratified

2. Simple Random Sample

3. Systematic

1. Stratified

2. Simple Random Sample

3. Systematic

College StatisticsAnswered question

Moselq8 2022-08-11

A transportation researcher is funded to estimate the proportion of automobile tires with an unsafe tread thickness in a small northern state. The researcher randomly selects one month during each of the four seasons for taking the measurements. During each of the four selected months, the researcher randomly selects 500 cars from the list of registered cars in the state and then measures the tread thickness of the four tires on each of the selected cars.

a) What is the population of interest?

b) What is the sampling frame?

c) What biases if any may result from using the data from this study to obtain the estimated proportion of cars with an unsafe thread thickness?

a) What is the population of interest?

b) What is the sampling frame?

c) What biases if any may result from using the data from this study to obtain the estimated proportion of cars with an unsafe thread thickness?

College StatisticsAnswered question

ljudskija7s 2022-08-11

Suppose you want to investigate the proportion of households in Muscat governorate that have fire extinguishers installed in their places. Briefly explain two types of frames you can use in sampling the households.

College StatisticsAnswered question

Stephanie Hunter 2022-07-22

A 129-kg astronaut (including space suit) acquires a speed of 2.90 m/s by pushing off with her legs from a 1900-kg space capsule. Use the reference frame in which the capsule is at rest before the push.

What is the velocity of the space capsule after the push in the reference frame? Express your answer to two significant figures and include the appropriate units. Enter positive value if the direction of the velocity is in the direction of the velocity of the astronaut and negative value if the direction of the velocity is in the direction opposite to the velocity of the astronaut.

What is the velocity of the space capsule after the push in the reference frame? Express your answer to two significant figures and include the appropriate units. Enter positive value if the direction of the velocity is in the direction of the velocity of the astronaut and negative value if the direction of the velocity is in the direction opposite to the velocity of the astronaut.

College StatisticsAnswered question

Parker Bird 2022-07-21

Data from a sample survey contain 28% foreign born and 72% native born when the population of interest is 22-78. What procedure adjusts the sample to match the population?

A. Standardization

B. Averaging

C. Weighting

A. Standardization

B. Averaging

C. Weighting

College StatisticsAnswered question

Talon Mcbride 2022-07-16

determine what type of sampling technique is used (Simple Random Sampling, Stratified Random Sampling, Systematic Sampling, Cluster Sampling, or Convenience Sampling).

A company is taking a survey of its employees and separates them into the following groups: Male/Part-Time, Male/Full-Time, Female/Part-Time, Female/Full- Time.

A company is taking a survey of its employees and separates them into the following groups: Male/Part-Time, Male/Full-Time, Female/Part-Time, Female/Full- Time.

A sampling frame is an important tool in mathematical research. It serves as a guide for selecting a sample of elements from a population. It helps to ensure that the sample is both representative and unbiased. Sampling frames can be constructed using existing data, or through surveys, experiments, or other methods. When constructing a sampling frame, it is important to consider any potential sources of bias, and to take into account any external factors that may affect the sample. Once the sampling frame is complete, it can be used to select a sample that accurately reflects the population. This can help to ensure that the data collected is both valid and reliable.