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A graph is best used to display data that shows a change over time?

A line graph.


Which graph is used to display categorical data?

A pie chart, bar graph, pictograph are some possibilities.


What DFD depicts?

A Data Flow Diagram (DFD) visually represents the flow of data within a system, illustrating how inputs are transformed into outputs through various processes. It highlights the sources and destinations of data, as well as the interactions between different components, such as processes, data stores, and external entities. DFDs are useful for understanding system functionality and can aid in identifying potential improvements or issues within a process. They are commonly used in systems analysis and design.


What is the difference between mesh analysis and nodal analysis?

In Mesh analysis you are using the values of the currents within a certain part of a circuit. In Node Analysis, you are observing the voltage at a certain point.


Difference between an entity class and an entity instance?

"An entity is a person, place, event, or thing about which data is collected...An instance is an occurence of an entity." - Systems Analysis & Design (4th) - DennisAn example of this would be STUDENT as the entity while JACK SMITH is an instance of that entity.If an entity is an individual "person, place, event, or thing about which data is collected", then an entity is an instance. Linguistically, entity is just another word for a single thing ("The existence of a thing as contrasted with its attributes.", Merriam-Webster's On-line Dictionary). Entities that have the same attributes are grouped in what are best called entity classes (it doesn't make sense to refer to a collection of entities as an entity). Entity and entity class are data modeling terms. The corresponding object modeling terms are object and class, albeit that a class typically has operations, which are foreign to an entity class.

Related Questions

What is research onion?

its a method of data collection and data analysis


What are the essentials of the scientific method?

Observation Hypothesis Experiment Collection of Data Analysis of Data Sharing Data


What is the mathematical definition of data display?

A collection of facts, such as values or measurements.


Do data analysis help people in understanding the result of a survey conducted?

Data analysis must be used to understand the results of a survey. Otherwise, the data collected by the survey would remain a jumbled collection of data.


When is a problem researchable?

is a problem that can be investigated through the collection and analysis of data.


Which phase of the data collection and display process is considered the most important?

Analyzing


What is a collection of information called?

collection of information is called


What type of control in a form can display data from database table?

A DataGridView control in a Windows Forms application can display data from a database table. You can bind the DataGridView to a data source such as a DataTable or a collection of objects, and it will automatically display the data from the database table in a tabular format.


What are the key features to consider when choosing survey scanning software for data collection and analysis?

When choosing survey scanning software for data collection and analysis, key features to consider include compatibility with different types of surveys, ease of use, accuracy in data capture, ability to handle large volumes of data, robust reporting and analysis tools, and data security measures.


What are statistics in math?

"Statistics is the study of the collection, organization, analysis, and interpretation of data." (Wikipedia)


What science process is used when you tell the characteristics of an object.?

Observation, data collection and analysis.


What are some of the sources of error in your analysis?

Some sources of error in analysis can include data collection inaccuracies, incomplete data, biased sampling methods, human error in data entry or analysis, and assumptions made during the analytical process.