Statistics Quiz

What is the definition of population in a statistical study?

• The entire group of individuals we want information about

• A subset of individuals in the population from which we collect data

• Collects data from every individual in the population

• A study that collects data from a sample to learn about the population

What is the purpose of a census?

• To select individuals from the population who are easy to reach

• To collect data from a sample to learn about the population

• To estimate the value of a population based on a sample

• To collect data from every individual in the population

What is a sample in a statistical study?

• The entire group of individuals we want information about

• A subset of individuals in the population from which we collect data

• Collects data from every individual in the population

• A study that collects data from a sample to learn about the population

What is the definition of a sample survey?

• The entire group of individuals we want information about

• A subset of individuals in the population from which we collect data

• Collects data from every individual in the population

• A study that collects data from a sample to learn about the population

What is convenience sampling?

• Selecting individuals from the population who are easy to reach

• Collecting data from every individual in the population

• Using a chance process to determine which members of a population are included in the sample

• Allowing people to choose to be in the sample by responding to a general invitation

What is bias in a statistical study?

• The design of a statistical study shows bias if it is very likely to underestimate or very likely to overestimate the value you want to know

• Selecting individuals from the population who are easy to reach

• Using a chance process to determine which members of a population are included in the sample

• Allowing people to choose to be in the sample by responding to a general invitation

What is voluntary response sampling?

• Selecting individuals from the population who are easy to reach

• Collecting data from every individual in the population

• Allowing people to choose to be in the sample by responding to a general invitation

• Using a chance process to determine which members of a population are included in the sample

What is random sampling?

• Selecting individuals from the population who are easy to reach

• Using a chance process to determine which members of a population are included in the sample

• Collecting data from every individual in the population

• Allowing people to choose to be in the sample by responding to a general invitation

What is a simple random sample (SRS)?

• A subset of individuals in the population from which we collect data

• The entire group of individuals we want information about

• A study that collects data from a sample to learn about the population

• A simple random sample (SRS) of size n is chosen in such a way that every group of n individuals in the population has an equal chance to be selected as the sample

What is sampling without replacement?

• When an individual from a population can be selected only once

• When an individual from a population can be selected more than once

• Groups of individuals in a population who share characteristics thought to be associated with the variables being measured in a study

• Selects a sample by choosing an SRS from each stratum and combining the SRSS into one overall sample