An anthropologist is studying the strength of fragments of pottery ("sherds") found inthree archeological sites in the Phoenix Basin area of Arizona. Her study involvesapplying force to the sherds until they break, so she plans to use only a small sampleof available artifacts. Her data contains the location of the sherd (site), and theweight and thickness of the sherd. A partial list of the data is shown below. a) Briefly describe a process to select a simple random sample of size n = 20 fromthis list of sherds. You may assume that you have a random number table to workwith, but do NOT carry out the process you describe.
b) Briefly describe how a stratified random sample could be selected with stratacorresponding to archeological sites.

Question

An anthropologist is studying the strength of fragments of pottery ("sherds") found inthree archeological sites in the Phoenix Basin area of Arizona. Her study involvesapplying force to the sherds until they break, so she plans to use only a small sampleof available artifacts. Her data contains the location of the sherd (site), and theweight and thickness of the sherd. A partial list of the data is shown below.  a) Briefly describe a process to select a simple random sample of size n = 20 fromthis list of sherds. You may assume that you have a random number table to workwith, but do NOT carry out the process you describe.
b) Briefly describe how a stratified random sample could be selected with stratacorresponding to archeological sites.

Quizplus · Accepted Answer

The Answer of An anthropologist is studying the strength of fragments of pottery ("sherds") found inthree archeological sites in the Phoenix Basin area of Arizona. Her study involvesapplying force to the sherds until they break, so she plans to use only a small sampleof available artifacts. Her data contains the location of the sherd (site), and theweight and thickness of the sherd. A partial list of the data is shown below.  a) Briefly describe a process to select a simple random sample of size n = 20 fromthis list of sherds. You may assume that you have a random number table to workwith, but do NOT carry out the process you describe.
b) Briefly describe how a stratified random sample could be selected with stratacorresponding to archeological sites.

An Anthropologist Is Studying the Strength of Fragments of Pottery