Craig, B: Introduction to the Practice of Statistics
Summary statistics 1a based on the textbook Introduction to the practice of statistics that is used in the first year of studying psychology on the University of Groningen. Good luck studying!
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Bachelor Psychology
Statistiek 1
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Introduction to the practice of statistics
1.1 Data
Cases Objects described by a set of data.
Label A special variable used in some data sets to distinguish the different cases.
Variable A characteristic of a case.
1.2 Displaying distributions with graphs
Distribution of a Lists the categories and gives either the count or the percent of cases that
categorical variable fall in each category.
Midpoint The value with roughly half the observations taking smaller values and half
taking larger values.
Unimodal A distribution with one major peak.
, Percents
Bar graph
Pie chart
Quantitative variables:
Stemplots
Histograms
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