Which of the following violates the principle of data visualization? - Answer-The data-ink ratio should be higher than 1
When the lie-factor of a graphical chart is more than 1, - Answer-the size of the effect shown in the graph is bigger than the actual effect in the data.
In for a chart to ...
WPC 300 Exam Questions and Answers
Which of the following violates the principle of data visualization? - Answer-The data-ink
ratio should be higher than 1
When the lie-factor of a graphical chart is more than 1, - Answer-the size of the effect
shown in the graph is bigger than the actual effect in the data.
In for a chart to minimize graphical complexity, the data-ink ratio must be: - Answer-
close to 1
Which are useful principles for data visualization? - Answer-The graph suggests a
possible true effect
Visualization of spatial data are most illustrative when shown using - Answer-Maps
Which of the following statements is a reason not to use a table for data visualization? -
Answer-Tables cannot easily show trends
Deleting the grid lines in a chart - Answer-Increases the data-ink ratio
Which of the following statement(s) about charts is true? - Answer-Data ink can
sometimes help tell a richer story
In order for a chart to have graphical integrity, the lie factor must be: - Answer-close to 1
3 Truths of Charts - Answer-1. Should have graphical integrity
2. Should tell a story
3. Should minimize graphical complexity
Which of the following is a Type-I error? - Answer-The null hypothesis is actually true,
but the hypothesis test incorrectly rejects it.
What is the confidence interval when the level of significance is 0.07? - Answer-0.930
Which of the following is a difference between the t-distribution and the standard normal
(z) distribution? - Answer-The t-distribution has a larger variance than the standard
normal distribution
Which of the following is a continuous random variable? - Answer-The time to complete
a specific task
The central limit theorem states that if the population is normally distributed, then the -
Answer-Sampling distribution of the mean will also be normal for any sample size
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