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22 Cards in this Set
- Front
- Back
What is Data? |
Data consists of facts or statistics out of context used for analysis |
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Give four examples of what data could be |
It could be numbers, characters, symbols or images |
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True or False, data has meaning |
False |
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What two things happen to data to gives it meaning? |
Data is processed and put into context
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Data is turned into information. Give three examples of information? |
asentence of words, a sequence of numbers or a series of images |
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To changedata into information, it needs to become part of a ......... |
Structure |
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Explain what a constant is |
A constant is a data entity that is stored to permanently and carry out the same actions each time |
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Explain what a variable is |
A variable is a data entity that can be altered |
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True of false? A variable name can be as small as a single letter or a single number |
False, variables cannot begin with a number |
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Other than a letter, what symbol can be used to start a variable name? |
The underscore ( _ ) |
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Give a definition of a reserved word |
A reserved word is a word that is reserved for use by the programming language, such as print |
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Data can be stored in many different forms.What is the proper term for these forms? |
Data structures |
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How does a computer keep track of the different types of data it processes? |
The computer uses special internal codes |
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Python has five named datatypes, what are they? |
Python has five standard data types: Numbers String List Tuple Dictionary |
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What four numerical datatypes does python use? |
int (signed integers) long (long integers, they can also be represented in octal and hexadecimal) float (floating point real values) complex (complex numbers) |
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What are primitive data types? |
Primitive data types are predefined types of data that are supported by the programming language |
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Integers and floats are the most common numerical data types. Explain what the difference is between an integer and a float |
Integers are whole numbers, whereas floats are decimal numbers |
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What is the full term that describes a float? |
Floating point |
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Describe what a string variable is |
A string variable is a sequence of characters, basically groups of letters or words |
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What does putting quotations around a variable name preserve? |
It preserves all of the white space such as spaces and tabs, such as 'Quoteme on this' |
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True or false, strings that use double quotations work the same way as single quotations |
True |
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Is a number in quotations marks still a number, or does it become a string? |
It becomes a string |
