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Units 1-3: Vocabulary

Teacher: Ms. Adams
Across
Results are said to be this when anther variable, besides the explantory variable, affects the response variable.
It's like a histogram, but it shows the individual values. (3 words)
A prediction into the future using a known relationship between x and y.
The combination of specific levels from all the factors that an experimental unit receives.
A type of study in which subjects are identified in advance and the data is collected as events unfold.
A type of study in which researchers first identify subjects and then collect past data.
Specific values of a factor in an experiment.
A type of display that shows the 5-number summary
A sample in which all those in the population are equally likely to be chosen. (3 words)
With observational data, it's a seperate influence of the explanatory and response variable. (2 words)
These types of models are appropriate for distributions whose shapes are unimodal and roughly symmetric.
A measure, r, of how linear an association is.
Data are values whose units are known.
This line must pass through the point (x ̅,y ̅ ).
The datum in the exact middle of a data set
When groups of experimental units are similar, it's often a good idea to put them into these.
Q3-Q1. It always goes with the median
Down
When you describe these, you should mention: shape, center, and spread
x ̅ or μ
When some portion of the population may not be sampled at all or enough.
When data are this, they are either to the right or left, depending on where the "tail"goes.
A value that describes how far away a datum is from the mean of the data it belongs to. (2 words)
Data are counts or percentages of individuals in categories
How many SD a datum is in a normal distribution.
Data whose display has one "bump"
A type of study in which researchers don't assign choices, they watch them.
The "y" or dependent variable.
What R^2 tells us about in relation to two variables.
Stragglers that stand off away from the body of the distribution.
An explanatory variable in an experiment.
Sampling methods that over or under-emphasize certain groups of a population are said to be this.
A sample of the entire population