1. The teacher randomly selects 20 boys and 15 girls from a batch of learners to be members of a group that will go to a field trip. 2 A sample of 10 mice are selected at random from a set of 40 mice to test the effect of a certain medicine. 3. Two out of five people in a certain seminar are asked what they think about the president. 4. A barangay health worker asks every 4th house in the village for the ages of the children living in those households. 5. Bea, a statistics student, wants to determine who cares more about their physical appearances, the male or the female students. She wants to limit her study to the grade 11 students. There are unequal numbers of grade 11 students: 250 are males and 279 are females. She wants her sample to consist only of 50 students.

Q: Explain simple random sampling and stratified random sampling, describe clearly the situations where…

A: Explain simple random sampling and stratified random sampling, Simple Random Sampling : 1 Simple…

Q: A nursing home director keeps a list of every resident they are responsible for. Using this list,…

A: In the systematic sample we select sample after the fixed interval.

Q: Explain the difference between the following sampling techniques: simple random sampling, stratified…

A: Simple random sampling : It is a the sampling when samples are chosen randomly, where each unit has…

Q: Which type of sampling method is used in the following? 20 people from each dorm are asked to fill…

A: In simple random sampling, the samples are chosen at random from the whole population. In cluster…

Q: 4. A group of students in a high school do a study about teacher attitudes. They interview teachers…

A: 4. Convenience sampling: The convenience sample is taken using the subjects that are easily…

Q: determine what type of sampling technique is used

A: Stratified sampling : This method is used when the parent population or sampling frame made up of…

Q: et's say we wanted to do research on medical students and we wanted to know if board scores…

A: In cluster sampling, the population is divided into naturally occurring groups/sections called…

Q: Surveys that combine one or more of simple random sampling, systematic random sampling, cluster…

A: Sampling: In statistical analysis, the sampling is defined as selection of subjects from the…

Q: Give real life examples of simple random sampling and stratified sampling

A: Sampling is choosing a part of the total population . It is done to draw inferences about population…

Q: When a researcher who is studying "serious tennis players" asks 200 people if they qualify as this…

A: In the following problem Convenience Sampling is to be used

Q: Explain the concept ofrepresentative sampling.

A: Representative sampling: A representative sample is a subset of a population that seeks to correctly…

Q: Researchers waited outside a restaurant. They stopped every 12th person who came out of the…

A: Systematic sampling method : In systematic sampling, the target population is ordered and the sample…

Q: find sample variance   41,45,48,49,52,53,55

A:

Q: rite is details about different sampling techniques?

A: Sampling techniques: A sample in order to provide adequate description or inference of the…

Q: State one similarity and one difference between quota sampling and stratified random sampling.

A: Please find the explanation below.

Q: he density netion of the cont variable X, the total number of hours, in units of 100 hours, that a…

A: We want to find average and variance.

Q: Define sampling error in a sample survey

A:

Q: Explain why you should get a much better prediction for μ by using x from a sample size n rather…

A: The confidence interval on mean is given as x-Zα2sdn≤μ≤x-Zα2sdn where  μ=population meanx=sample…

Q: Among the random and non-random sampling techniques that we have, which do you think is the most…

A: Random/Probability sampling is a technique in which each member of the population has an equal and…

Q: Describe about what constitutes a sampling distribution by creating one from scratch.

A:

Q: Online gamers are divided into different age groups. A random sample from each group is selected and…

A: From the given information we want to know method of sampling.

Q: Please give two types of sampling that causes bias. Give an example of each

A: Sampling : It is the statistical method which is used to take sample from population in a different…

Q: Describe about the types of sampling.

A: In simple random sampling, each of the unit is population has equal chance of being selected in the…

Q: When would you use purposive and representative sampling?

A: Often a researcher does a random sampling which includes people from every background and demography…

Q: The circulation of a newspaper is increasing at a constant rate. Three months ago the circulation…

A:

Q: provide an example using convenience sampling to design a study with 100 students

A: Convenience sampling is a method of non-probability sampling where the sample is  taken from the…

Q: ppose that 97% of Monarch butterflies migrate to Mexico in winter. What is the smallest sample size…

A: Given data, 97% of Monarch butterflies migrate to Mexico in winter p=97%=0.97 What is the smallest…

Q: 2. Explain the systematic random sampling approach and provide an example.

A: Sampling is nothing but the technique of selecting individual members from of the population…

Q: Define sample and explain basic elements of sampling

A: Here we need to define and explain the sample and basic elements of sampling.

Q: In stratified sampling, the population of interest is first divided into several non-overlapping…

A: Introduction: Stratified sampling is one of the commonly used sampling techniques, that usually uses…

Q: Suppose you want to know how much students in Greek organizations study per week, on average.You…

A: Simple random sampling: Simple random sampling is defined as a method of sampling in which, a sample…

Q: A test of the effectiveness of a new curriculum could begin by dividing an area by school district,…

A: Here we have given the sampling scheme, We have to identify which of the random sampling scheme is…

Q: A local fast food restaurant interviews every 10th customer placing an order at the counter. What…

A: According to the question, a local fast food restraunt interviews every 10th customer placing an…

Q: Explain browfly about Double Sampling Plan? AQL

A:

Q: In statistics we are able to make inference because statistics have a predictable distribution…

A: Introduction Hypothesis is an assumption that is being tested.

Q: Briefly explain Random Sampling Error.?

A: A sampling error is a statistical error that occurs when an analyst does not select a sample that…

Q: Explain the meaning of a. a representative sample.b. probability sampling.c. simple random sampling.

A: a.Representative Sample is a group or set chosen from a larger statistical population or group of…

Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.