Is It Random Sampling

For a class assignment, Tyler will conduct a survey to find out what students like to do after school. He asks the first 30 people he sees in the gymnasium before school what they like to do after school. Which statement correctly explains whether Tyler's sample is a random sample?

• Tyler's sample is not random because he only asks 30 people

• Tyler's sample is random because he asks only the first 10 people he sees

• Tyler's sample is not random because he asks people in a gymnasium, which could skew his results to sports

• Tyler's sample is random because he asks each person the same question

Assign each car in a dealership a number and then use a random-number table to select the cars to be inspected. 

• systematic

• random sample

• convenience

• volunteer response

Marianne wanted to know students' opinion on the new schedule at school. She places all students' names in a container and picks out 20 to survey. 

• Convenience Sampling

• Systematic Sampling

• Random Sampling

• Volunteer response

It is the selection of n elements derived from population N which is the subject of the investigation in which each sample point has an equal chance of being selected using proper sampling techniques.

• sampling distribution

• random sampling

• non-random sampling

• probability sampling

A random sample of people is one in which...

• all people have an equal chance of being chosen.

• all people are warned in advance of the survey.

• No one has a good chance of being chosen.

• One group is more likely to be chosen than another.

Sample in which each individual or object in the entire population has an equal chance of being selected.

• Simple Event

• Sample

• Random Sample

• Scatter Plot

_________ is a sample in which each individual or object in the entire population has an equal chance of being selected.

• Sample

• Population

• Random Sample

• Quartile

A sample in which each individual or object in the entire population has an equal chance of being selected.

• biased sample

• population

• random sample

• sample

Identify and explain the sampling method being used in the situation below. A sample of 2,000 was sought to estimate the average achievement in science of fifth graders in a city’s public schools. The average fifth grade enrollment in the city’s elementary schools is 100 students. Thus, 20 schools were randomly selected and within each of those schools all fifth graders were tested.

Identify the sampling method used in this situation. 

At a birthday party, teams for a game are chosen by putting everyone's name into a jar, and then choosing the names at random for each team. 

• Simple Random

• Systematic

• Cluster

• Convenience