Ch2 Flashcards
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Frequency distribution
Describes the pattern of a set of numbers by displaying a count or proportion for each possible value of a variable
Frequency distribution
Describes the pattern of a set of numbers by displaying a count of proportion for each possible value of a variable
Frequency table
Visual depiction of data that shows how often each value occurred
Normal distribution
Is a specific frequency distribution that is a bell shaped symmetric univocal curve
Skewed distribution
One of the tails of the distribution is pulled away from the center
Positively skewed
The tail of the distribution extends to the right in a positive direction
Floor effect
A situation in which a constraint prevents a variable from taking values below a certain point
Floor effect
A situation in which a constraint prevents a variables from taking values below a certain point
Negatively skewed
Distribution with a tail that extends to the left in a negative direction
Ceiling effect
Situation in which a constraint prevents a variable from taking on values above given numbee
Ceiling effect
a situation in which a constraint prevents a variable from taking on values above a given number