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Statistics - Discrete versus Continuous Variables

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Discrete versus continuous variables
Which of the following variables are best thought of as continuous, which discrete? Indicate your choice for each by checking the appropriate column.

Variable Discrete Continuous
----------- -------- -------------
a) The mass of the solid impurities per millimeter of Los Angeles tap water
b) The number of occupies tables at Zito's Café at 8pm next Friday.
c) The lifetime, in hours, of 100 watt light bulb manufactured by Northington Industries
d) The temp of a burrito served to a customer in a local Mexican restaurant

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