The Pelee Island Bird Observatory does its annual bird count every December. Researchers set up traps in the trees in three locations to gather the birds.

Determine the type of sampling used to collect data In a medical research studya researcher selects hospital and interviews the patients that day Please select the correct answer below Random sampling Systematic Sampling Stratified Sampling Cluster Sampling

Identify the sampling techniques used, and discuss potential sources of bias (if any). Explain. After a tsunami, a disaster area is divided into 250 equal grids. Thirty of the grids are selected, and every occupied household in the grid is interviewed to help focus relief efforts on what residents require the most. What type of sampling is used? A. Stratified sampling is used, since the disaster area is divded into grids, and a random sample is taken from each grid. B. Cluster sampling is used, since the disaster area is divded into grids, and a random sample is taken from each grid. C. Stratified sampling is used, since the disaster area is divided into grids, and some of those grids are selected and everyone in those grids is interviewed. D. Cluster sampling is used, since the disaster area is divided into grids, and some of those grids are selected and everyone in those grids is interviewed. What potential sources of bias are present, if any? Select all that apply. A. Certain grids…

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Identify the sampling technique used to obtain the following sample. Ping pong balls in a basket are shaken and then balls are selected from the basket. Choose the correct sampling technique below. O A. Cluster sampling O B. Random sampling C. Systematic sampling O D. Stratified sampling O E. Convenience sampling

Identify the sampling method (simple random sampling, systematic sampling, convenience sampling, or stratified sampling) in the following studies    a. You split the population into faculty and students and then choose a random sample from each.     b. You assign each member of the population a number and choose the sample using a computer program that randomly picks numbers.                       c. You ask every 3rd person who walks into the store to complete a survey.

A marketing expert for a particular chain of restaurants is planning a survey in which 510 people will be randomly selected from each age​ group: 10-19,​ 20-29, and so on.       What type of sampling is​ used?     Convenience sampling   Simple random sampling   Systematic sampling   Stratified sampling   Cluster sampling Is the procedure likely to yield a representative sample or a biased​ sample? Explain why.     A. The procedure is likely to yield a representative sample because it covers every age group.   B. The procedure is likely to be biased because people from those age groups are not evenly distributed throughout the population.   C. The procedure is likely to yield a biased sample because younger people​ don't know what they want and should be studied separately.   D. The procedure is likely to be representative because 510 people from each age group form a large sample size.