Flashcards in Stats 2 First Exam Deck (61)
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1
Descriptive research
Describes population we are studying
2
Central tendency demonstrates
Mid-points
3
Spread
Range, SD, D, etc.
4
Frequency
Number of times it occurs, percent/portion of time it occurs: n, f, p
5
Inferential research
Infer from the sample to the population
6
Parameter
Value corresponding to population
7
Statistic
Value corresponding to sample
8
Historical research
Looking at past using causal comparative, descriptive, and inferential analysis
9
Regression
Type of correlation research positing temporal order of variable
10
Causal-Comparative
Allows for making causal statements
11
Ex-post facto
Identify settings with differing characteristics and assume difference in results is due to different characteristics
12
Pre-experimental designs
Are limited. Example: One-shot case study
13
Quasi-experimental design
Control group and experimental group but no randomization.
14
True experimental design
Researcher manipulation and randomization
15
Meta-analyses
Aggregate results from many different studies (frequently based on effect sizes)
16
Continuous variable
Allows values in-between
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Categorical variable
Groups, no in-between
18
Fixed variable
Allows only certain range (e.g., ages 20-40)
19
Random variable
Allows all possibilities. Each has equal and independent chance of occurring
20
Multivariate
More than one DV
21
Univariate
One DV
22
Multiple regression
More than one IV
23
Factorial
More than one IV with analysis of variance
24
Sampling distribution
Graph statistics of infinite number of samples (graph of means)
25
Central limit theorem
Graph of means will be equal to population mean (The mean of the means (Samples) is the mean (population mean)
26
Mean distribution
Unit normal curve
27
Chi square distribution
Summation of variances
28
T distribution
Difference between means divided by standard errors
29
F distribution
Variances compared as ratio
30
