what are the different data types a variable can have

1. Primitive Data Type: such as boolean, char, int, short, byte, long, float, and double
2. Non-Primitive Data Type or Object Data type: such as String, Array, etc.

Full Answer

What does data type define for a variable?

Data Type: The data type of a value (or variable in some contexts) is an attribute that tells what kind of data that value can have. Most often the term is used in connection with static typing of variables in programming languages like C/C++, Java and C# etc, where the type of a variable is known at compile time. Data types include the ...

What is a valid variable data type?

Valid types are byte, short, int and long. Which type you should use, depends on the numeric value. Floating point types represents numbers with a fractional part, containing one or more decimals. There are two types: float and double.

What is an example of variable data?

Variables are the characteristics or attributes that you are observing, measuring and recording data for - some examples include height, weight, eye colour, dog breed, climate, electrical conductivity, customer service satisfaction and class attendance, just to name a few.

What are the categories of data?

categories of data. In the context of perception management and its constituent approaches, data obtained by adversary individuals, groups, intelligence systems, and officials. Such data fall in two categories: a. information--A compilation of data provided by protected or open sources that would provide a substantially complete picture of friendly intentions, capabilities, or activities.

What are the different data types that a variable can be?

A variable that holds integers (whole numbers) has the data type Integer and is called an integer variable....Variables and Data Types.TypeSize in MemoryRange of ValuesByte1 byte0 to 255Boolean2 bytesTrue or FalseInteger2 bytes–32,768 to 32,767Long (long integer)4 bytes–2,147,483,648 to 2,147,483,6477 more rows

What are the 4 different data types?

4 Types of Data: Nominal, Ordinal, Discrete, Continuous.

What are the 5 different data types?

Most modern computer languages recognize five basic categories of data types: Integral, Floating Point, Character, Character String, and composite types, with various specific subtypes defined within each broad category.

What are the 7 different data types?

Integer (int) It is the most common numeric data type used to store numbers without a fractional component (-707, 0, 707).Floating Point (float) ... Character (char) ... String (str or text) ... Boolean (bool) ... Enumerated type (enum) ... Array. ... Date.More items...•

What are the 3 types of variables in computer programming?

float, double and decimal - these three types of variables handle whole numbers, numbers with decimals and fractions. The difference between the three lies in the range of values.

What is data types and its types?

A data type is a classification of data which tells the compiler or interpreter how the programmer intends to use the data. Most programming languages support various types of data, including integer, real, character or string, and Boolean.

What are the 10 data types?

10 data typesInteger. Integer data types often represent whole numbers in programming. ... Character. In coding, alphabet letters denote characters. ... Date. This data type stores a calendar date with other programming information. ... Floating point (real) ... Long. ... Short. ... String. ... Boolean.More items...•

What are the 11 data types?

Data typeBoolean (e.g., True or False)Character (e.g., a)Date (e.g., 03/01/2016)Double (e.g., 1.79769313486232E308)Floating-point number (e.g., 1.234)Integer (e.g., 1234)Long (e.g., 123456789)Short (e.g., 0)More items...•

What are the 5 data types in Python?

Python has six standard Data Types:-Numeric.String.List.Tuple.Set.Dictionary.

What are the 4 data types in Python?

Following are the standard or built-in data type of Python:Numeric.Sequence Type.Boolean.Set.Dictionary.

What are simple data types?

Simple data types represent a single value. Simple data types used to create policies: Integer. The integer data type represents a positive whole number or its negative value. Examples of integers are 0 , 1 , 2 , 3 and 4 . Float.

Which is not a data type?

arr is not a data type. Boolean is a data type that is used to declare a statement either true or false. Character is a data type that is used to declare alphabets in both uppercase and lowercase. Int is a data type that is used to declare integers.

What are the basic data types?

Basic Data TypesInteger.Double or Real.String.Boolean.Date/Time.Object.Variant.

Why are there different data types?

Different types of data are represented in different ways inside a computer and need varying amounts of memory to store them. They also have different operations that can be performed upon them. All values that belong to the same data type will be represented in the same way.

What are data types in computer?

In computer science and computer programming, a data type (or simply type) is a set of possible values and a set of allowed operations on it. A data type tells the compiler or interpreter how the programmer intends to use the data.

What are different types of data types in C++?

Primitive data types available in C++ are:Integer.Character.Boolean.Floating Point.Double Floating Point.Valueless or Void.Wide Character.

What are independent and dependent variables?

You can think of independent and dependent variables in terms of cause and effect: an independent variable is the variable you think is the ca...

What is a confounding variable?

A confounding variable , also called a confounder or confounding factor, is a third variable in a study examining a potential cause-and-effect r...

What is the difference between quantitative and categorical variables?

Quantitative variables are any variables where the data represent amounts (e.g. height, weight, or age). Categorical variables are any variables...

What is the difference between discrete and continuous variables?

Discrete and continuous variables are two types of quantitative variables : Discrete variables represent counts (e.g. the number of objects in a...

What are the two types of quantitative variables?

There are two types of quantitative variables: discrete and continuous.

What are the three types of categorical variables?

There are three types of categorical variables: binary, nominal, and ordinal variables.

How to tell if a variable is independent or dependent?

You can think of independent and dependent variables in terms of cause and effect: an independent variable is the variable you think is the cause, while a dependent variable is the effect. In an experiment, you manipulate the independent variable and measure the outcome in the dependent variable.

What is data in math?

Data is a specific measurement of a variable – it is the value you record in your data sheet. Data is generally divided into two categories: Quantitative data represents amounts. Categorical data represents groupings. A variable that contains quantitative data is a quantitative variable; a variable that contains categorical data is ...

Why do you need to know what types of variables you are working with?

You need to know which types of variables you are working with in order to choose appropriate statistical tests and interpret the results of your study.

What are the variables that determine if a plant is salt tolerant?

If you want to test whether some plant species are more salt-tolerant than others, some key variables you might measure include the amount of salt you add to the water, the species of plants being studied, and variables related to plant health like growth and wilting.

What is variable in statistics?

Published on November 21, 2019 by Rebecca Bevans. Revised on March 2, 2021. In statistical research, a variable is defined as an attribute of an object of study. Choosing which variables to measure is central to good experimental design. Example.

Why is it important to know the variable type?

Knowing the variable type will allow you to interpret the results of the experiment or study.

What Is a Variable?

A variable is something you can control, manipulate, or measure when conducting research or experiments. They are characteristics, numbers, or quantities and can represent specific items, people, places, or an idea. The variables may be referred to as data items.

What is dependent variable?

Dependent variables are the variables in your experiment that rely on other variables and can be changed or manipulated by the other variables being measured.

What is control variable?

Control variables. Control variables are the variables in your experiment that are constant. They do not change over the course of the experiment or study and will have no direct effect on the other variables being measured.

Why are control variables important in an experiment?

Control variables are not technically part of the experiment, but they can help ensure more accurate results and actually make it easier to reproduce the experiment or study.

What is the difference between a statistician and a scientist?

Scientists and statisticians conduct experiments on a regular basis. Scientists use these experiments to identify cause and effect, while Statisticians use variables to represent the unknown or varied data in their experiments.

Why are variables called variables?

They are referred to as variables because the values can vary. A variable’s value can change within a single experiment. Whether there is a change between the groups being studied or the value changes over time, it may not necessarily be a constant.

Why do computers use data types?

Computer programs use data types to organise different types of data in a program. Data can also be constant or variable within programs and functions.

What is data classified into?

Data is classified into types, such as a set of whole numbers (also known as integers) or a set of printing characters.

Can operations be applied to values of one data type?

Some operations that can be applied to values of one data type obviously do not make sense when applied to values of another type. For example, we can calculate the square root of the integer 4, but not of the string "hello world".

What are the three types of data types in C++?

Every data type requires a different amount of memory. Data types in C++ is mainly divided into three types: Primitive Data Types: These data types are built-in or predefined data types and can be used directly by the user to declare variables. example: int, char , float, bool etc. Primitive data types available in C++ are: Integer.

Why do we use data types in C++?

Therefore, we can say that data types are used to tell the variables the type of data it can store. Whenever a variable is defined in C++, the compiler allocates some memory for that variable based on the data-type with which it is declared.

What is boolean data type?

Boolean: Boolean data type is used for storing boolean or logical values. A boolean variable can store either true or false. Keyword used for boolean data type is bool .

What is the keyword used for integer data types?

Integer: Keyword used for integer data types is int. Integers typically requires 4 bytes of memory space and ranges from -2147483648 to 2147483647.

What is datatype modifier?

As the name implies, datatype modifiers are used with the built-in data types to modify the length of data that a particular data type can hold.

What are the different types of data types in C?

Each variable in C has an associated data type. Each data type requires different amounts of memory and has some specific operations which can be performed over it. Let us briefly describe them one by one:#N#Following are the examples of some very common data types used in C: 1 char: The most basic data type in C. It stores a single character and requires a single byte of memory in almost all compilers. 2 int: As the name suggests, an int variable is used to store an integer. 3 float: It is used to store decimal numbers (numbers with floating point value) with single precision. 4 double: It is used to store decimal numbers (numbers with floating point value) with double precision.

What is the most basic data type in C?

char : The most basic data type in C. It stores a single character and requires a single byte of memory in almost all compilers.

Why is data type important in programming?

In programming, data types is an important concept. To be able to operate on variables, it is important to know something about the type. Without data types, a computer cannot safely solve this: let x = 16 + "Volvo";

What type of operator to use to find the type of a JavaScript variable?

You can use the JavaScript typeof operator to find the type of a JavaScript variable.

What is a string in text?

A string (or a text string) is a series of characters like "John Doe".

How many types of numbers are there in JavaScript?

JavaScript has only one type of numbers.

What is dynamic type in JavaScript?

JavaScript has dynamic types. This means that the same variable can be used to hold different data types:

When adding a number and a string, will JavaScript treat the number as a string?

When adding a number and a string, JavaScript will treat the number as a string.