anonymous
  • anonymous
The following are examples of different types of variables. Which are discrete variables? Check all that apply. A. Number of votes for a candidate B. Telephone number C. Temperature of a hot pizza D. Speed of a race car E. Weight of an elephant
Mathematics
chestercat
  • chestercat
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Hero
  • Hero
Well, maybe just A and B
anonymous
  • anonymous
Number of votes for a candidate Telephone number
mathmate
  • mathmate
Discrete variables go in steps, and nothing in between. For example, the number of people in a household is a discrete variable, because there cannot be 3.3 people in the house.

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Zarkon
  • Zarkon
discrete variables have possible outcomes that are countable
Hero
  • Hero
Put pi in front of everything to figure this out Can you have: pi # of votes? No pi as a telephone number or digit? No pi temperature? Yes pi Speed? Yes pi Weight? Yes If something is continuous, it is not discrete. Discrete values are not continuous.
Hero
  • Hero
Well, maybe decimals would be a better thing to use than pi
Hero
  • Hero
Can you express # of votes as a decimal? No Telephone number as a decimal? No Temperature as a decimal? Yes Speed as a decimal? Yes Weight as a decimal? Yes If it can be expressed as a decimal, then it is not discrete. If it can't be expressed as a decimal, then it is discrete. You can use that as a general guideline. It may not apply to every and all situations.
anonymous
  • anonymous
Yeah like what Hero said..lol
Zarkon
  • Zarkon
"It may not apply to every and all situations. " it doesn't discrete just means countable possible outcomes. it is possible for a variable to have outcomes that are rational numbers...this would be a discrete variable (even though you have decimals)
Hero
  • Hero
I see what you mean. The ultimate question to ask is, "Is whatever you are measuring countable?". If yes, it is discrete, if not, then it is not discrete.
anonymous
  • anonymous
so whats the answer?
anonymous
  • anonymous
telephone number & number of votes for a candidate

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