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25547399
Statistics
Descrição
Mapa Mental en Statistics 1st concept map, creado por Francisco Fernández en 11/09/2020.
Sem etiquetas
primero
Mapa Mental por
Francisco Fernández
, atualizado more than 1 year ago
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Criado por
Francisco Fernández
quase 4 anos atrás
2
0
0
Resumo de Recurso
Statistics
Science of collecting , organizing, analyzing and interpreting data
Descriptive
Branch of statistics that involves the organization, summarization, and a display of data
Inferential
Branch that involves using a sample to draw conclusions about a population
Data
Information coming from observation, counts, measurements or responses (value a variable can assume)
Collection of data values=Data Set Each of the data set is called data value or datum
Types of data sets
Population
All subjects that are being studied
A numerical description of it it is called a parameter
Sample
Is a subset of a population
A numerical description of it it is called a statistic
(Sample data must be collected using an appropriate method, if not the data are of not value
Types of Data
Qualitative
Consists of attributes, labels, or non numerical entries
Quantitative
Consist of numerical measurements or counts
Variables
Characteristics or attributes that can assume different values
Types of Data & Variables are the same
Quantitave
Discrete Variables
Assume values that can be counted
Continuous variables
Assume an infinite number of values between any two specific valves (Often use fractions and decimals)
Qualitative
(Variable whose valves are determined by chance are called Random Variables
Data and variables & interrelated
Levels of Measurement
Nominal
Qualitative only (No math here)
Ratio
Similar to interval (Zero is an inherent zero) A ratio of data is formed so that one data is expressed as multiple of another
Ordinal
Qualitative or Quantitative Can be arranged in order or ranked
Interval
Can be order and can calculate meaningful differences (Zero represents a position on a scale)
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