Ch 7: AIS in Action

You co-own a theme park. You believe that the longer customers stay in the park, the hungrier they will be which would increase the amount they spend on food. Your co-owner believes that the longer customers stay in the park, the more likely they are to feel nauseated which would decrease the amount they spend on food. Both of you gather data and find some evidence supporting your belief. If the true relation is that there is no relation between time in the park and food sales, what type of error did your co-owner make?

type I error

Making an item in the data area of a viz larger to increase emphasis is an example of using which principle?

weighting

Which of the following can be used to present data unethically?

All of the above - selectively presenting only part of a viz - with an axis, showing the most recent time closest to the origin - truncating or stretching the axes

Which of the following is NOT a good reason to visualize data?

Building visualizations does not take as much time as writing a report

A general rule of thumb is that a visualization should only have 3-5 groups in the data area. Putting in more or less than this amount violates which principle?

Goldilocks principle

A data analyst develops a classification model to predict whether a customer will be unsatisfied, neither satisfied nor unsatisfied, or satisfied with their online purchasing experience. The data item of customer satisfaction is an example of what type of data?

categorical data

A company wants to determine how to decrease employee turnover. In order to do this, they test whether paying off an employee's student debt will cause fewer employees to leave. The analytic testing whether paying off an employee's student debt causes lower turnover is an example of which type of analytic?

diagnostic

Which of the following is a technique to simplify data presentations?

distance

A company uses a boxplot in a visualization. What is likely the purpose of the visualization?

distribution

Which chart type is best for depicting trends over time?

area chart