1.2 Data, Sampling, and Variation in Data and Sampling

What type of data is represented by hair color, blood type, and the car a person drives?

• Quantitative discrete

• Quantitative continuous

• Numerical

• Qualitative

Which of the following is an example of quantitative continuous data?

• Number of students in a class

• Weights of backpacks with books in them

• Types of cars in a parking lot

• Number of books in a library

What type of sampling involves dividing the population into groups and then taking a proportionate number from each group?

• Simple random sampling

• Stratified sampling

• Cluster sampling

• Systematic sampling

Which of the following is a non-random sampling method?

• Systematic sampling

• Convenience sampling

• Stratified sampling

• Simple random sampling

What type of data is represented by the number of machines in a gym?

• Categorical

• Quantitative discrete

• Quantitative continuous

• Qualitative

What type of graph is used to display qualitative data and consists of bars sorted into order by category size?

• Pie chart

• Histogram

• Pareto chart

• Line graph

What is the term for a sample that is not representative of the population?

• Systematic sample

• Cluster sample

• Biased sample

• Random sample

Which sampling method involves selecting every nth piece of data from a listing of the population?

• Systematic sampling

• Simple random sampling

• Stratified sampling

• Cluster sampling

What type of data is represented by the colors of houses?

• Numerical

• Qualitative

• Quantitative continuous

• Quantitative discrete

What is the term for the error caused by factors not related to the sampling process?

• Systematic error

• Sampling error

• Nonsampling error

• Random error