25547399
Description
Mind Map by Francisco Fernández, updated more than 1 year ago
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Created by Francisco Fernández
about 4 years ago
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Statistics
- Science of
collecting ,
organizing,
analyzing and
interpreting data
- Descriptive
- Branch of statistics that involves the organization, summarization, and a display of data
- 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
- Branch that involves using a sample to draw conclusions about a population
- Descriptive
- 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
- A numerical description of it it is called a parameter
- All subjects that are being studied
- Sample
- Is a subset of a population
- A numerical description of it it is called a statistic
- 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
- Is a subset of a population
- Population
- Types of data sets
- Collection of data values=Data Set
Each of the data set is called data value or datum
- Types of Data
- Qualitative
- Consists of attributes, labels, or non numerical entries
- Consists of attributes, labels, or non numerical entries
- Quantitative
- Consist of numerical measurements or counts
- Consist of numerical measurements or counts
- Qualitative
- Information coming from observation, counts, measurements or responses (value a variable can assume)
- 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
- Assume values that can be counted
- Continuous variables
- Assume an infinite number of values between any two specific valves
(Often use fractions and decimals)
- Assume an infinite number of values between any two specific valves
(Often use fractions and decimals)
- Discrete Variables
- Qualitative
- Quantitave
- (Variable whose valves are determined by chance are called Random Variables
- Types of Data & Variables are the same
- Characteristics or attributes that can assume different values
- Data and variables & interrelated
- Levels of Measurement
- Nominal
- Qualitative only
(No math here)
- 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
- 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
- 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)
- Can be order and can calculate meaningful differences
(Zero represents a position on a scale)
- Nominal
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