AP Statistics Unit 6 Vocabulary

6.1 Random Variable

numerical outcome of a chance process (13 students who guessed correctly)

6.1 Probability Distribution

gives us information about the likely hood that a specific event happens (13 or more students will guess correctly)

6.1 Discrete Random Variable

fixed set of possible values with gaps between them

6.1 Mean/Expected Value

summarize an average of a distribution after many many trials . can be found by x times p(x).

6.1 Standard Deviation of Discrete Random Variable

measure how much the value varies from the mean

6.1 Continous Random Variable

takes any value on the interval

6.1 How to Find Probability for a Continous Random Variable

area under the density curve