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 height of a fifth-grade boy (b) In an experimental study, the participant's estimate for the height of a-meter image projectedmeters away (c) The amount of coffee in a cup dispensed by a coin-operated coffee machine (d) The number of personal-injury traffic accidents last week on Interstatein Indiana

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