Descriptive Statistics
This measure of center is found by summing all the values and dividing by the number of values.
What is the mean?
The probability of an event that is certain to occur.
What is 1?
A sample where each individual has an equal chance of being selected.
What is a simple random sample?
The symbol used for the population mean.
What is μ (mu)?
The science of collecting, organizing, analyzing, and interpreting data in order to make decisions
What is a statistics?
This measure of spread is the difference between the largest and smallest values.
What is the range?
If A and B are independent, P(A and B) = ?
What is P(A) × P(B)?
A study where the researcher imposes a treatment.
What is an experiment?
A method for estimating population parameters from sample statistics.
What is statistical inference?
The collection of all outcomes, responses, measurements, or counts that are of interest
What is a Population?
The value that appears most frequently in a dataset.
What is the mode?
A distribution where outcomes are equally likely.
What is a uniform distribution?
When participants or researchers do not know which treatment was given.
What is a double blind study?
A range of values within which a population parameter likely falls.
What is a confidence interval?
A number that describes a Population characteristic?
What is a parameter?
This is the value that separates the lower 50% from the upper 50% of a data set.
What is the median?
The rule used to find the probability of A or B occurring.
What is the addition rule?
Occurs when people choose to be part of a study?
What is Voluntary response bias?
The probability of rejecting a true null hypothesis.
What is a Type I error?
A variable that cannot be assigned a numerical value, just a description
What is a Categorical Variable?
This statistic measures the average squared distance from the mean.
What is the variance?
The probability that event A occurs given that event B has occurred.
What is conditional probability?
The method of randomly assigning units to groups to reduce bias.
What is randomization?
The two types of inference are confidence interval and.............
Hypothesis testing(Significance test)
A number that describes a sample characteristic
What is a Statistic?