Summary: Statistics The Art And Science Of Learning From Data : Third Edition ...  9781784483517  Alan Agresti, et al
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1 statistics: the art and science of learning from data
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what is descriptive statistics?
summarizing and analyzing the data, thats obtained. 
what is inferencial statistics?
making decisions and predictions based on the data for answering statistical questions. 
what is a (sample) statistic?
a numerical summary of a sample taken from the population. 
2 Exploring data with graphs and numerical statistics
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when is a variable categorial and when is it quantitative?
it's categorial if the observations can be put in categories, and its's quantitative if the observations can be expressed in numbers. 
what is the key characteristic of a quantitive variable?
there has to be different magnitudes, or you need to be able to take an average of the variable. 
when is a quantitive variable dicrete, and when is it continuous?
it is descrete when it's possible values form a set of seperate numbers, it's continuous when the possible values form an interval. 
what is the modal category?
the category with the highest frequency. 
what is the pareto principle?
a small subset of categories often contains most of the observations. 
what is a histogram?
a bar graph that shows the (relative) frequencies of the observations of a quantative variable. 
if the set of data is small which type of graph is usually preferred?
the stemandleaf plot or the dot plot is usually preferred.
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Topics related to Summary: Statistics The Art And Science Of Learning From Data : Third Edition ...

Exploring data with graphs and numerical statistics

Association: contingency, correlation, and regression

Statistical inference: confidence intervals

Statistical inference: significance tests about hypothesis

Comparing two groups

Analyzing the association between categorical variables

Analyzing association between quantitative variables

Nonparametic statistics