vocab
chance experiment
An experiment where you repeatedly conduct a trial or a process that can have two or more results due to uncertainty and then observe the results
population characteristic
A number that summarizes data collected from the entire population
sample
Any collection of members of a population
theoretical probability
The expected relative frequency of an event when conducting many trials of the chance experiment. When all outcomes in the sample space are equally likely, it is the number of outcomes that give that event divided by the number of possible outcomes.
dot plot
a simple form of data visualization that consists of data points plotted as dots on a graph with an x- and y-axis.
empirical probability
The probability of an event that is calculated after observing the outcomes from multiple trials of the chance experiment. It is the value of the ratio of the number of observations of the event to the number of trials conducted.
population proportion
The value of the ratio of the number of members of a population that have a specified characteristic to the total number of members in the population
sample statistic
A number that summarizes data collected from a sample
tree diagram
A graphical representation that displays all possible sequences of outcomes in a multistage experiment. The tree starts by displaying two or more branches that represent the possible outcomes in the first stage of the experiment. Each of those branches then splits off to the possible outcomes in the second stage. If there are more stages, this process continues until all possible sequences of outcomes are displayed. The total number of branches at the end of the tree is the number of possible outcomes in the sample space of the multistage experiment. Each individual path of branches, from beginning to end, is a unique sequence of single-stage results that forms an outcome of the multistage experiment.
fraction
a numerical quantity that is not a whole number
event
A set of one or more possible outcomes. A simple event is an event with only one outcome. A compound event is an event with more than one outcome.
probability
A measure of how likely it is thet an event will happen, We describe probability by using a number between O and 1,
sampling distribution
The distribution of the values of a statistic calculated for repeated samples of the same size from the same population
data
facts and statistics collected together for reference or analysis.
frequency
the rate at which something occurs or is repeated over a particular period of time or in a given sample.
outcome
The result of a single trial of a chance experiment
probability model
A mathematical representation of a chance experiment that accounts for all outcomes within the sample space and assigns a probability to each outcome
sampling variability
The variation in the values of a statistic among samples of the same size from the same population
equal
being the same in quantity, size, degree, or value.
round
alter (a number) to one less exact but more convenient for calculations.
population
Any entire collection of people, animals, or objects that someone is interested in learning about. Each person, animal, or object in the population is called a member.
random sample
A sample in which every member Of the population has an equally likely chance Of being chosen
simulation
A procedure in which we conduct a chance experiment that closely resembles a real situation of interest
mean
intend to convey, indicate, or refer to (a particular thing or notion); signify.
ratio
the quantitative relation between two amounts showing the number of times one value contains or is contained within the other.