MIDTERM PRACTICE

How are you feeling about the in class midterm quiz?

• Very Confident

• Confident

• Somewhat Confident

• Not Confident

What is true about an ordinal variable?

• Categorical

• Quantitative

• Meaningful Order

• Meaningful Difference

• True Zero

Match the following

• What is likely to happen in the future?

• Predictive

• What happened?​

• Diagnostics

• Why did it happen?

• Prescriptive

• ​

  What’s the best course of action?

• Descriptive

​ (a)   is one that is freely available for download and use.

​ (b)   is one where data is collected and stored by a private organization.​

​ (c)   is an organized collection of structured information, or data, typically stored electronically in a computer system.​

• An open-source dataset
• A Private source dataset
• A database
• A dataset
• A data source

Match the following sampling method

• Stratified Sampling

• 
• Cluster Sampling

• 
• Simple Random Sampling

• 
• Systematic Sampling

• 

Match the following

• Sample

• A summary measures associated with the sample

• Population

• Contains all objects of interest that we wish to study.​

• Statistic

• A summary measures associated with the population

• Parameter

• A subset of the population to use for analyses.

Match the following

• Observation

• The individual pieces of information that we collect from each observational unit.

• Observation Units

• The individual subjects in our sample

• A variable

• An attribute that describes the subject being studied​

Match the following

• Cell

• Observational Units

• Rows

• Variables

• Columns

• Observations

What is true about a nominal variable?

• Categorical

• Quantitative

• Meaningful Order

• Meaningful Difference

• True Zero

What is true about a Discrete variable?

• Categorical

• Quantitative

• Based on counts

• Based on measurements

• True Zero