What is NOT an example of primary data for an NFL team?
a. Attendance at the sporting event
b. Survey taken in front of the stadium
c. Merchandise sales figures on Sunday
d. Data of the city from the census bureau
e. All of the above are examples of primary data for the NFL team.
Question 2
In a stratum chart, the vertical distance between two lines represents the
a. amount of the upper line variable.
b. amount of the lower line variable.
c. sum of the upper and lower line variables.
d. difference of the upper and lower line variables.
e. None of the above.
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Survivorship curves. Blue lines are theoretical curves. Red dots are data from field studies.
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