# Summary: Statistics The Art And Science Of Learning From Data : Third Edition ... | 9781784483517 | Alan Agresti, et al

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## Read the summary and the most important questions on Statistics The Art and Science of Learning from Data : Third Edition : Alan Agresti & Christine Franklin | 9781784483517 | Alan Agresti; Christine A. Franklin

• ### 1 statistics: the art and science of learning from data

This is a preview. There are 10 more flashcards available for chapter 1

• #### 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

This is a preview. There are 58 more flashcards available for chapter 2

• #### 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 stem-and-leaf plot or the dot plot is usually preferred.