Statistics and Probability Questions & Answers

Statistics and Probability Questions & Answers As likely as not - ANSWER: 50% Bar Graph - ANSWER: a graphical representation to organize data that uses solid bars that do not touch each other to show the frequency (number of times) that each category occurs Biased Sample - ANSWER: is NOT representative of a population. One or more parts of the population are favored over others. Box and Whisker Plot - ANSWER: A measure of variability that uses the median to graph data Box plot (box & whisker plot) - ANSWER: a graphical representation showing the five-number summary of data (minimum, lower quartile, median, upper quartile, maximum) Categorical Data - ANSWER: data that represents the attributes of a group of people, events, or objects Certain - ANSWER: 100% Circle Graph - ANSWER: a circular graph with partitions (sections) that represent a part of the total Complement of an Event - ANSWER: the probability of the non-occurrence of a desired outcome Compound Event - ANSWER: consists of two or more successive outcomes. The probability of a two or more outcomes occurring is the ratio of the number of favorable outcomes to the number of possible outcomes. Dependent Event - ANSWER: If the occurrence of one event DOES affect the likelihood that the other event will occur Dot Plot - ANSWER: a graphical representation to organize small sets of data that uses dots (or Xs) to show the frequency (number of times) that each number occurs Event - ANSWER: A collection of one or more outcomes Experimental Probability - ANSWER: likelihood of possible outcomes based on repeated trials of an experiment Fundamental Counting Principle - ANSWER: An event M has (m) possible outcomes. An event N has (n) possible outcomes. The total number of outcomes of event M followed by event N is (m * n) . Impossible - ANSWER: 0% Independent Event - ANSWER: If the occurrence of one event DOES NOT affect the likelihood that the other events will occur.