2. Range, Median, Mean, Mode Range- The difference between the highest and the lowest #s in the data. Median- The middle # when the data are put in order Mean- sum of the #s divided how many #s there are Mode- the # that appears the most often
3. Stem and leaf plot A way to display data by putting it in order!
4. Lower and Upper quartiles Lower quartile- median of the first half of the data Upper quartile- median of the second half of the data
6. Lower and Upper extreme Lower extreme- lowest # in the data Upper extreme- highest # in the data
7. Circle and line graphs Circle graph- breaks data into parts of a whole Line graph- displays data over time
8. Tree Diagram A diagram used to show all the possible outcomes/ combinations
9. Fundamental Counting Principle If one event can occur in m ways and then the second event can occur in n ways. The ways that the two events can occur together is m*n
10. Complementary When one or the other event has to happen probabilities will add up to one
14. Independent and Dependent Events Independent: The first event does not affect the second event. Dependent: The first event does have an affect on the second event.