Data Collection and Statistics Quiz

What is a population?

• A method of collecting data by observing the variable of interest

• The value or values that occur most frequently in a data set

• An entire set of items from which data are collected

• A selection from a population

What is a sample?

• A graphical representation of data

• An entire set of items from which data are collected

• A selection from a population

• The number of times an item or number occurs in a data set

What is an observational study?

• A table used to organize data according to how many times a data value occurs

• One method of collecting data in which a researcher collects data by observing the variable of interest

• A method of collecting data in which people are asked one or more questions

• The method of collecting data in which a researcher imposes a condition and observes the results

What is an experiment in the context of statistics?

• A method of collecting data in which a researcher collects data by observing the variable of interest

• One method of collecting data in which a researcher imposes a condition and observes the results

• A selection from a population

• A graphical representation of data

What is frequency ?

• The value or values that occur most frequently in a data set

• A selection from a population

• The number of times an item or number occurs in a data set

• A method of collecting data in which people are asked one or more questions

What is a frequency table?

• A graphical representation of data using either horizontal or vertical bars

• The value or values that occur most frequently in a data set

• A table used to organize data according to how many times a data value occurs

• An entire set of items from which data are collected

What is a survey?

• A method of collecting data in which a researcher collects data by observing the variable of interest

• A method of collecting data in which people are asked one or more questions

• A selection from a population

• The number of times an item or number occurs in a data set

What does a bar graph display?

• The number of times an item or number occurs in a data set

• A selection from a population

• Categorical data using either horizontal or vertical bars

• A table used to organize data according to how many times a data value occurs

What is a mode?

• A method of collecting data in which people are asked one or more questions

• The number of times an item or number occurs in a data set

• The value or values that occur most frequently in a data set

• A selection from a population