EXAM #01
Data-ink is the ink used in a table or chart that:
is necessary to convey the meaning of the data to the audience.
Customers entering a store are asked to sample 3 cups of beverages and rank their preferences ordered from best to worst. What type of data results?
Ordinal
Any data value with a z-score less than -3 or greater than +3 is considered to be a(n) _____.
Outlier
The ______ probability distribution can be used to estimate the number of vehicles that go through an intersection during the lunch hour.
Poisson
A forecast that helps direct police officers to areas where crimes are likely to occur based on past data is an example of _________ analytics.
Predictive
The method helps managers arrive at an optimal solution.
Prescriptive
Data driven decision making tends to decrease a firm's_____.
Risk
A ____ is a graphical presentation of the relationship between two quantitative variables.
Scatter Chart
Which of the following graphs cannot be used to display categorical data?
Scatter Chart
The triangular distribution is a good model for ______. distribution.
Skewed
Probability is the____.
Numerical measure of the likelihood that an event will occur.
The charts that are helpful in making comparisons between categorical variables are:
Bar Charts and Column Charts
Quality grading of beef products as prime, choice, select. What type of data?
Categorical
A graphical presentation that uses vertical bars to display the magnitude of quantitative data is known as a:
Column Chart
an experiment consists of determining the speed of automobiles on a highway by the use of radar equipment. The random variable in this experiment is a
Continuous Random Variable
The _____ shows the number of data items with values less than or equal to the upper class limit of each class.
Cumulative Frequency distribution
The variance is based on the ____.
Deviation about the mean
A variable that can only take on specific numeric values is called a_______.
Discrete Random Variable
A ____ is a graphical summary of data previously summarized in a frequency distribution.
Histogram
The best way to differentiate chart elements is using:
Labels
Tables should be used instead of charts when______.
The values being displayed have different units or very different magnitudes.
All of the following are examples of discrete random variables except_____.
Time
A _____ determines how far a particular value is from the mean relative to the data set's standard deviation.
Z-score