Sampling
A sample that selects subjects from the population who
are available to use.
What is a Convenience Sample?
Data point that is really far away from the trend line.
What is an outlier?
Type of probability with dependent events.
What is Conditional Probability?
When you gather data by asking questions, this type of investigation can be "open-ended" or "close-ended".
What is a Survey?
The outcomes of a binomial experiment and the corresponding probabilities of these outcomes
What is a Binomial Distribution?
A sample where every member of the population has an equal chance of being selected.
What is a Random Sample?
A graph of the ordered pairs (x, y) of numbers consisting of the independent variable x and the dependent variable y.
What is a Scatter Plot?
A device consisting of line segments emanating from a starting point and also from the outcome point. It is used to determine all possible outcomes of a probability experiment.
What is a Tree Diagram?
This term describes what happens when you survey every single person or thing in the entire population.
What is a Census?
Consists of the values a random variable can assume and the corresponding probabilities of the values. The probabilities are determined theoretically or by observation.
What is a Discrete Probability Distribution?
A sample obtained by selecting a preexisting or natural group, called a cluster, and using the members in the cluster for the sample.
What is a Cluster Sample?
Relationship between 2 variables. Can be positive or negative.
What is correlation?
The result of a single trial of a probability experiment.
What is an Outcome?
An arrangement of n objects in a specific order.
What is a Permutation?
A discrete random variable of a probability distribution and is the theoretical average of the variable.
What is an Expected Value?
A sample obtained by numbering each element in the population selecting some random starting point, and then selecting every kth element (third or fifth or tenth, etc.) from the population to be included in the sample.
What is a Systematic Sample?
Line drawn in scatter plot that shows the general position of most of the dots.
What is a Trend Line?
Consists of a set of outcomes of a probability experiment.
What is an Event?
A selection of distinct objects where the order they are chosen does not matter.
What is a Combination?
This type of experiment has a fixed number of independent trials, only two possible outcomes (success/failure), and a constant probability of success.
What is a Binomial Experiment?
A sample obtained by dividing the population into subgroups according to similar characteristics and then
randomly selecting members from each group for the sample.
What is a Stratified Sample?
Computed from the sample data measures the strength and direction of a linear relationship between two quantitative variables. (Hint: 3 words)
What is a Linear Correlation Coefficient?
The set of all possible outcomes of a probability experiment.
What is a Sample Space?
If they cannot occur at the same time and have absolutely no outcomes in common, events are described as mutually exclusive or this "D" word.
What is Disjoint?
If a distribution has a long tail stretching out to the right towards larger numbers, it is described by this specific two-word term.
What is Positively Skewed?