Exam 14: Sampling and Simulation

What term is given to a sample chosen at random from a population?

Which of the following is a common simulation technique?

The survey question "Why do you think people break laws?" is a poor survey question because it

The PAC-10 Conference consists of ten schools. Schools of the PAC-10 1- Arizona 5 - Oregon State 9- Washington 2 - Arizona State 6 - Stanford 0- Washington State 3 - California 7 - UCLA 4 - Oregon 10 - USC Use the following random number table to select two schools at random from the conferes to play the first game of the season. Presume the highlighted entry has been randomly sel as your first school, and you are working down the columns then left to right from columı column to select the next school. 1 0 4 8 0 2 2 3 6 8 2 4 1 3 0 4 2 1 6 7 3 7 5 7 0 7 7 9 2 1 9 9 5 6 2 9 6 1 0 1 8 9 5 7 9 8 5 1 7 5 2 8 9 1 8 6 3 3 5 3 0 9 4 2 9 1 0 0 6 5 1 0 3 6 5 0 7 1 1 9 5 1 0 8 5 0 2 3 6 8 0 1 0 1 1 5 2 1 6 2 From the table, the first school chosen is Arizona. What will the second school be ?

An example of a good technique for getting a random sample of the population would be to ask a question over the radio on a station that covers the region where the entire population lives, and have the listeners phone in with an answer.

The basic simulation technique using random numbers is referred to as the Las Vegas method.

In multistage sampling, a very large population is given a questionnaire to determine those who meet the qualifications for the study.

Samples are said to be biased when some type of systematic error has been made in the selection of the subjects.

A pollster wants to determine which local news channel is watched most frequently in New York City. Two city blocks in Manhattan are used as a sample. What type of sampling technique is being used?

A(n) is defined as all subjects (human or otherwise) that are being studied.

If a researcher chooses a name at random in the phone book and then chooses every 100th name thereafter as a sample, the researcher would be employing the method of systematic sampling.

Identify the type of sample obtained by selecting a preexisting or natural group and using the members in the group as the sample.

A survey could be biased if the identity of those being surveyed is known.

For a sample to be , every member of the population must have an equal chance of being selected.

A statistics teacher taught Introductory Statistics to a large lecture class of 200 students. She wanted to estimate the average on the first examination by selecting every eighth Student's test score and finding the average of these scores. What type of sampling Technique is being employed?

Which of the following examples of a survey question is not meant to bias the response?

Which of the following methods will give a truly random sampling of the general population?

Simulate ten coin tosses using the following random numbers table. Represent the first toss with the highlighted number, then move down the column number-by-number moving from the bottom a column to the top of the next column to the right until ten numbers have been chosen. If the odd numbers represent tails, and the even numbers represent heads, how many tails are there in the group of ten simulated tosses?