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Behavioral Statistics Test 1
Formulas and vocabulary pertaining to Behavioral Statistics
13
Mathematics
Undergraduate 3
09/15/2013

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Cards

Term
Descriptive Statistics
Definition
Used to summarize and organize data
Term
Inferential Statistics
Definition
used to make predictions about a population by studying a sample from said population
Term
biased
Definition
does not represent the population accurately
Term
summation of scores
Definition
∑x
Term

mean

definition and formula

Definition

adding all of the scores together and then dividing by the number of scores

 

M = ∑x/n

 

 

Term
formula to find number of scores in a frequency distribution
Definition
∑ƒ = n
Term
weighted mean
Definition
∑x1 + ∑x2 / n1 + n2 = M
Term

Definition SS

Population

Definition
SS = ∑(x-μ)2
Term

Definition SS

Sample

Definition
SS = ∑(x-M)2
Term

Computation SS

Population

Definition
SS = ∑x2 - (∑x)/ N
Term

Computational SS

Sample

Definition
SS = ∑x- (∑x)2 / n
Term

Standard Deviation

Population

Definition
σ = √SS/N
Term

Standard Deviation

Sample

Definition
SD = √SS/n-1
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