Podcast
Questions and Answers
What is the primary consideration for defining the target population for the Metro U Dining Club?
What is the primary consideration for defining the target population for the Metro U Dining Club?
- The likely patrons for the new venture (correct)
- The food preferences of the faculty
- The availability of dining options in the neighborhood
- The total student enrollment at Metro U
Which of the following best describes sample statistics?
Which of the following best describes sample statistics?
- They summarize data collected from the entire target market.
- They provide insight into population parameters derived from sample data. (correct)
- They measure characteristics of individuals in the target population.
- They are estimators of population parameters based on entire population data.
What type of data is used to measure the proportion of students/employees expressing interest in the dining club?
What type of data is used to measure the proportion of students/employees expressing interest in the dining club?
- Ratio data
- Interval data
- Nominal data (correct)
- Ordinal data
Which of the following data levels is represented by the frequency of eating on or near campus in the last 30 days?
Which of the following data levels is represented by the frequency of eating on or near campus in the last 30 days?
How does the choice of population parameters affect data collection in research?
How does the choice of population parameters affect data collection in research?
Which data type is exemplified by the respondent type, such as faculty, staff, or student?
Which data type is exemplified by the respondent type, such as faculty, staff, or student?
What is indicated by the interval data regarding student spending per visit?
What is indicated by the interval data regarding student spending per visit?
What aspect of data collection is influenced by how measurement scales are set?
What aspect of data collection is influenced by how measurement scales are set?
What is one of the main sources of error related to research, according to Deming?
What is one of the main sources of error related to research, according to Deming?
Which factor does NOT influence the size of a probability sample?
Which factor does NOT influence the size of a probability sample?
Which statement about sample size in research is TRUE?
Which statement about sample size in research is TRUE?
What is a characteristic of probability sampling?
What is a characteristic of probability sampling?
What misconception exists regarding sample representation?
What misconception exists regarding sample representation?
Which statement best describes non-probability sampling?
Which statement best describes non-probability sampling?
How does the number of subgroups of interest affect sample size?
How does the number of subgroups of interest affect sample size?
What is the role of budgetary constraints in sample selection?
What is the role of budgetary constraints in sample selection?
What is a defining characteristic of probability sampling?
What is a defining characteristic of probability sampling?
Which type of sampling requires researchers to know the probability of selection for each individual?
Which type of sampling requires researchers to know the probability of selection for each individual?
In systematic sampling, how are individuals typically selected?
In systematic sampling, how are individuals typically selected?
What is a key advantage of stratified sampling?
What is a key advantage of stratified sampling?
During which stage of research is non-probability sampling commonly used?
During which stage of research is non-probability sampling commonly used?
An example of simple random sampling involves which of the following methods?
An example of simple random sampling involves which of the following methods?
If a company's employee distribution is 800 females and 200 males, which sampling method would best represent this gender balance?
If a company's employee distribution is 800 females and 200 males, which sampling method would best represent this gender balance?
What type of sampling is characterized by its reliance on a non-random selection process?
What type of sampling is characterized by its reliance on a non-random selection process?
What is the main characteristic of cluster sampling?
What is the main characteristic of cluster sampling?
What is a potential drawback of convenience sampling?
What is a potential drawback of convenience sampling?
Which of the following accurately describes voluntary response sampling?
Which of the following accurately describes voluntary response sampling?
In cluster sampling, what occurs if the clusters are large?
In cluster sampling, what occurs if the clusters are large?
What type of sample is generated when a researcher selects people who are the most accessible?
What type of sample is generated when a researcher selects people who are the most accessible?
Why are voluntary response samples often biased?
Why are voluntary response samples often biased?
What defines purposive sampling?
What defines purposive sampling?
When conducting research across multiple locations, what benefit does cluster sampling offer?
When conducting research across multiple locations, what benefit does cluster sampling offer?
What is the primary purpose of purposive sampling in qualitative research?
What is the primary purpose of purposive sampling in qualitative research?
Which statement regarding snowball sampling is accurate?
Which statement regarding snowball sampling is accurate?
In quota sampling, what is primarily determined by the researcher?
In quota sampling, what is primarily determined by the researcher?
What is a key disadvantage of snowball sampling?
What is a key disadvantage of snowball sampling?
How does purposive sampling differ from simple random sampling?
How does purposive sampling differ from simple random sampling?
What is the main focus of quota sampling?
What is the main focus of quota sampling?
When is simple random sampling most commonly applied?
When is simple random sampling most commonly applied?
Which of the following describes an important aspect of purposive sampling?
Which of the following describes an important aspect of purposive sampling?
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Study Notes
Population Parameters
- Target population represents the potential customers for the proposed product or service.
- Population parameters are summary descriptors of variables of interest in the population.
- Sample statistics are descriptors of those same relevant variables computed from sample data.
- Different data scales are used for different population parameters.
Sampling Method
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Probability Sampling: respondents are randomly selected. Each person has an equal chance of being selected.
- Simple Random Sampling: every member of the population has an equal chance of being selected.
- Systematic Sampling: individuals are chosen at regular intervals from a numbered list.
- Stratified Sampling: the population is divided into subgroups based on relevant characteristics. A random sample is then selected from each subgroup.
- Cluster Sampling: the population is divided into clusters. Entire clusters are randomly selected.
-
Non-Probability Sampling: respondents are not randomly selected.
- Convenience Sampling: includes the individuals who are most accessible to the researcher.
- Voluntary Response Sampling: participants voluntarily participate in the research.
- Purposive Sampling: the researcher selects individuals based on their expertise or knowledge on the topic.
- Snowball Sampling: participants recruit other participants.
- Quota Sampling: the researcher selects a predetermined number of units from each subgroup.
-
Feasibility studies commonly use simple random sampling.
Sample Size
- The size of the sample depends on factors such as the variation in the population parameters, desired precision, error range, confidence level, and number of subgroups.
- The greater the variation in the population parameters, the larger the sample size needed.
- The greater the desired precision, the larger the sample size needed.
- The smaller the error range, the larger the sample size needed.
- The higher the confidence level, the larger the sample size needed.
- Budget considerations influence decisions about the size and type of sample.
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