Term

Definition
a group of methods used to collect, analyze, present, and interpret data and to make decisions 


Term

Definition
consists of methods for organizing, displaying, and describing data by using table, graphs, and summary measures



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Definition
Consists of methods that use sample results to help make decisions or predictions about a population 


Term

Definition
Consists of all elements individuals, items, or objects, whose characteristics are being studied. 


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Definition
The population being studied 


Term

Definition
a portion of the population selected for study 


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Definition
A survey that includes every member of a population



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Definition
the technique of collecting information from a portion of the population 


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Definition
a specific subject or object about which the info is collected 


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Definition
a characteristic under study that assumes different values for different elements 


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Definition


Term
Observation or Measurement 

Definition
the value of a variable for an element 


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Definition
a collection of observations on one or more variable 


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Definition
can be measured numericaly 


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Definition
a variable whose values are countable 


Term

Definition
A variable that can assume any numerical value over a certain interval or intervals 


Term
Qualitative or Categorial Variable 

Definition
a variable that cannot assume a numerical value, but can be classified into two or more nonnumeric categories 


Term

Definition
data recorded in the sequence in which they are collected and before they are processed 


Term

Definition
the frequency of a class or category divided by the sum of frequencies
Number in Category
Total number 


Term

Definition
A graph in which the classes are marked on the horizontal axis and frequencies, relative frequencies, or percentages are marked on the vertical axis. Bars drawn adjacent to eachother 


Term

Definition
The value of the middle term in a data set 


Term

Definition
numerical measures from the population 


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Definition
a measure of the central tendency calculated by dividing the sum of all values by the number of values in the data set 


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Definition
a measure of spread that is given by the positive square root of the variance 


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Definition


Term

Definition
the difference between the third and the first quartiles
Q3Q1=IQR 


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Definition


Term

Definition
gives the percentage of values in the data set that are smaller than this value 


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Definition
The difference between the largest and smallest value 


Term

Definition
The summary measures that divide a ranked data set into four equal parts 


Term

Definition


Term

Definition
an event composed of one and only one of the final outcomes of an experiment 


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Definition
a collection of more than the outcome of an experiment 


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Definition
A numerical measure of the likelihood that a specific event will happen. 


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Definition
the method of assigning probabilities to outcomes or events of an experiment with equally likely outcomes 


Term

Definition
a process with welldefined outcomes that, when performed, result in one and only ones of the outcomes per repetition 


Term

Definition
the probability assigned to an event based on the information and judgement of a person 


Term

Definition
if an experiment is repeated again and again 

