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EastWind [94]
2 years ago
14

Which of the following statements are true concerning abstraction and refinement? Select 3 options:

Computers and Technology
1 answer:
Akimi4 [234]2 years ago
5 0

Answer:

The answer to this question is given below in the explanation section

Explanation:

First,  we need to know what is abstraction and refinement.

Abstraction and refinement are used in application/system development in the field of computing. Abstraction is used to abstract the details from the model. It means that displaying only essential information about the the model and hiding other details. While refinement is the idea that is used in software development by moving through each level of abstraction and incrementally refining each level of abstraction, providing more detail at each increment. Refinement is the inverse of abstraction.  

So the correct options to this question are:

  • Models may be abstracted and refined depending on the goals of the project.
  • Abstraction is a technique used in computational thinking.
  • Refinement is the inverse of abstraction.

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Two time series techniques that are appropriate when the data display a strong upward or downward trend are ___________ and ____
VMariaS [17]

Answer:

adjusted exponential smoothing; linear regression.

Explanation:

A time series can be defined as a technique used in statistical analysis and it involves indexing sets of data elements in a timely or successive order i.e sequentially.

Two time series techniques that are appropriate when the data display a strong upward or downward trend are adjusted exponential smoothing and linear regression.

An adjusted exponential smoothing is a statistical technique used for forecasting through the calculation of the weighted average of an actual value.

5 0
2 years ago
ICT excel data homework
kifflom [539]
Static data field - the field is set at the start of the program (if creating a program) and can not be changed, its value will be constant. 
<span>Instance data field - can be manipulated by the user, so that its value can be stored: for example you have a data field storing how many hours a person can work in one day, the field will be static as there are always 24h in a day and that can not change. </span>
<span>If you have a second data field storing how many hours a certain employee worked that field will be an instance data field as its values can differ.</span>
4 0
3 years ago
Write a program that first gets a list of integers from input. The input begins with an integer indicating the number of integer
meriva

Answer:

package b4;

import java.util.Scanner;

public class TresholdValue {

public static void main(String[] args) {

 // Create an object of the Scanner class to allow for user's input

 Scanner input = new Scanner(System.in);

 // Create a prompt to allow users to enter the set of integers

 System.out.println("Please enter the set of integers, each followed by a space : ");

 // Get the first integer from the set of inputs.

 // Parse the input and convert it into an integer

 // by using the Integer.parseInt() method.

 // Store the result in an integer variable.

 int first = Integer.parseInt(input.next());

 // Create an integer array to hold the other numbers (first number excluded).

 // The array should have a length equal in value to the first number in the set.

 // This has been stored in a variable called "first".

 int[] intarray = new int[first];

 // Create a while loop that populate the intarray with the set of numbers

 int i = 0;

 while (input.hasNext() && i < intarray.length) {

  intarray[i] = Integer.parseInt(input.next());

  i++;

 }

 // Get the last value (threshold) from the intarray.

 // The threshold value is the last element in the array.

 int lastvalue = intarray[intarray.length - 1];

 // Create a prompt before displaying the set of values that are less than or

 // equal to the threshold value.

 System.out.println("Values less than or equal to the threshold value (" + lastvalue + ") are : ");

 // Create a loop to cycle through the array.

 // At each cycle, the element is checked if or not it is less than or equal to

 // the threshold value.

 // If it is less than or equal to, the number is printed.

 for (int j = 0; j < intarray.length - 1; j++) {

  if (intarray[j] <= lastvalue) {

   System.out.print(intarray[j] + " ");

  }

 }

 // (Optional) Close the Scanner object to prevent resource leak

 input.close();

}

}

Explanation:

The program has been written in Java. The source code file has been attached to this response. Please download it for better readability. The code contains comments explaining what goes on on each segment of the code.

Hope this helps!

Download java
3 0
2 years ago
Read 2 more answers
Which technology is predominately used for contactless payment systems?
kompoz [17]
The correct answer for this question is this one: "a. wireless local area network (WLAN)."

<span>The technology that is predominately used for contactless payment systems is called the </span><u>wireless local area network (WLAN)</u><u />. It is even used now a days.
Hope this helps answer your question and have a nice day ahead.
7 0
2 years ago
A group of students want to create an educational online game for computer laboratory in their school which type of network will
Natali [406]

Answer:

A.LAN

Explanation:

LAN (Local area Network) is a type of data communication network which covers a small geographical area such as a school compound. This network can accommodate variety of electronic devices including computers, laptops, file servers, printers and modems. In this example, a room can be identified for the project to consist of more than 20 computers sharing a file server and a single hard drive.

Best wishes!

6 0
2 years ago
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