Descriptive
This is the measure of central tendency found by adding all data values and dividing by the number of values.
what is the mean?
The probability of an event that is certain to happen.
What is 1?
The part of the population from which data are actually collected.
What is a sample?
range of values used to estimate a population parameter.
What is a confidence interval?
The measure of the strength and direction of a linear relationship between two quantitative variables.
What is the correlation efficient?
The middle value in an ordered data set.
What is the median?
If two events have no outcomes in common, they are called this.
What are mutually exclusive events?
A method where every individual has an equal chance of being selected.
What is a simple random sample(SRS)?
What is the p-value?
The line that models the relationship between a response variable and an explanatory variable.
The square root of the variance, showing how spread out the data are.
What is the standard deviation?
This formula calculates the probability of two independent events both occurring.
What is P(A and B)=P(A)x P(B)?
This occurs when a sample systematically over- or under-represents a part of the population.
In hypothesis testing, this is the statement you are trying to find evidence against.
The vertical distance between an observed value and the value predicted by a regression line.
What is the residual?
This is the difference between the largest and smallest values in a data set.
What is the range?
The probability of an event occurring given that another event has already occurred.
What is conditional probability?
A study in which the experimenter imposes a treatment to observe a response.
What is an experiment?
The probability of rejecting a true null hypothesis.
What is a Type 1 error?
When extrapolating beyond the range of the data, predictions are considered....
What is unreliable or dangerous?
A graph that uses rectangles to show the frequency of data in intervals.
What is a histogram?
A diagram used to display all possible outcomes of an event and their probabilities.
What is a probability tree?
A method in which neither the subjects nor the experimenters know which treatment the subjects receive.
What is a double-blinded experiment?
The probability of failing to reject a false null hypothesis.
What is a type 2 error?
A statistic showing the proportion of variation in the response variable explained by the explanatory variable.
What is R2?