This is sometimes referred to as an area sampling because it is usually applied on a geographical basis. Sampling Techniques: A. Simple Random Sampling B. Systematic Random Sampling C. Stratified Sampling D. Cluster Sampling
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2. This is sometimes referred to as an area sampling because it is usually applied on a geographical basis.
Sampling Techniques:
A. Simple Random Sampling
B. Systematic Random Sampling
C. Stratified Sampling
D. Cluster Sampling
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- The owner of a restaurant in Bloomington, Indiana, has recorded sales data for the past 19 years. He has also recorded data on potentially relevant variables. The data are listed in the file P13_17.xlsx. a. Estimate a simple regression equation involving annual sales (the dependent variable) and the size of the population residing within 10 miles of the restaurant (the explanatory variable). Interpret R-square for this regression. b. Add another explanatory variableannual advertising expendituresto the regression equation in part a. Estimate and interpret this expanded equation. How does the R-square value for this multiple regression equation compare to that of the simple regression equation estimated in part a? Explain any difference between the two R-square values. How can you use the adjusted R-squares for a comparison of the two equations? c. Add one more explanatory variable to the multiple regression equation estimated in part b. In particular, estimate and interpret the coefficients of a multiple regression equation that includes the previous years advertising expenditure. How does the inclusion of this third explanatory variable affect the R-square, compared to the corresponding values for the equation of part b? Explain any changes in this value. What does the adjusted R-square for the new equation tell you?5. This method is used when the population of interest is large and widely geographically dispersed. Sampling Techniques: A. Simple Random Sampling B. Systematic Random Sampling C. Stratified Sampling D. Cluster SamplingIn a study, the sample is chosen by grouping people by their city of residence and selecting 10 residents from each city.What is the sampling method? Simple Random Sampling Systematic Sampling Stratified Sampling Cluster Sampling Convenience Sampling
- 21. Stratified random sampling is a method of sampling that involves the division of a population into smaller groups known as strataSelect one:TrueFalseSuppose you are a market researcher conducting a study to determine the average household income in Durban North. Your budget allows you to survey only 500 households out of the 50,000 households in that particular suburb. Explain how you would use random sampling to select your sample focusing upon the potential sources of bias and error that may arise in the process1.The most critical criterion in selecting a sampling technique is A.how well the sample represents the population being studied B.the size of the sample C.the sampling methodology used to select the sample D.the sampling unit 2.When examining a research problem, prior research a company has conducted on a previous research question would be classified as A.internal secondary data B.internal primary data C.external secondary data D.external primary data 3. The first step in the marketing research process is to define the issue or problem. The second step is to A.examine secondary data for relevant information B.conduct a primary research study C.decide if an outside research firm will be used or if the research will be conducted internally D.analyze and interpret the data
- please explain the following random sampling methods along with giving examples for each in a business context situation. a) Systematic random sample b) Stratified Sample c) Cluster SampleAs a researcher, you want to determine the courses that the grade 12 students would like to take in college. Using systematic sampling technique, what steps you must consider? I. Ask every 7th student on the list II. Randomly select the students III. Compute the kth interval IV. Divide the population size by the sample size V. Select based on the kth consistent interval4 The city council plans to conduct a survey and use the results to improve city services. The council wants to select citizens at random to participate in the survey. Which sampling method will NOT produce results representative of the population? F Obtain a list of customer names from the water department and survey each member of every tenth household over the age of 18. G Survey every person who attends a city council meeting each month for six months. H Survey each member of households with even house numbers. J Use a computer program to generate a list of addresses.
- Which of the following is a basic step in selecting a sample from a population regardless of the specific technique being used? Select one: a. Identify the population b. All of these option c. Define the sample size d. Select a sampleUnder what circumstances would you choose non probability sampling techniques over simple random sampling10 Snow ball sampling are a. non- probability sampling b. essentially judgmental sampling c. Same as cluster sampling d. Probability sampling