Basic Concepts
A branch in math that presents a summary of the characteristics of a sample or a population.
What is Descriptive Statistics?
A graph made up by rectangles, used for qualitative or discrete data.
What is a bar chart?
The number of times a particular piece of data, or value, appears during a trial or set of trials.
What is absolute frequency?
The biggest value of data minus the lowest value of data.
What is the distribution range?
The universe, a set of elements that have a common characteristic.
What is a population?
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Variables used when the characteristics of a population that cannot be expressed with numbers.
What is a qualitative variable?
This rule can be used to calculate the number of classes in which our data will be divided.
What is the Sturges rule?
The Science of Data.
What is Statistics?
This chart consists in rectangles together, representing continuous data.
What is a histogram?
Groups in which our continuous data is divided.
What are classes?
A table used to summarize the number of times a particular piece of data, or value, appears during a trial or set of trials.
What is a Frequency Table?
Variables that can take any value in a range.
What are continuous variables?
A linear graph that is used to obtain the number of observations above or below certain values.
What is an ogive?
This variables can only take finite number of values.
What are discrete variables?
The fraction of times a certain value appears.
What is the relative frequency?
A part of a population used to represent an infinite or very large population.
What is a statistic sample?
A circular chart, usually expressed in percentage.
What is a pie chart?
Variables that can be expressed with numbers.
What are quantitative variables?
The product of 360 and the relative frequency.
What are the angles of a pie chart?