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Gnom [1K]
3 years ago
9

What happens when a dataset includes records with missing data?

Computers and Technology
1 answer:
34kurt3 years ago
6 0

Answer:

However, if the dataset is relatively small, every data point counts. In these situations, a missing data point means loss of valuable information. In any case, generally missing data creates imbalanced observations, cause biased estimates, and in extreme cases, can even lead to invalid conclusions.

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Write a program that reads a file containing text. Read each line and send it to the output file, preceded by line numbers. If t
Shtirlitz [24]

Answer:

I am writing a JAVA program:

import java.io.FileReader;  // class used for reading data from a file

import java.io.IOException;  //class used for handling exceptions

import java.io.PrintWriter;  // class used to printing or writing formatted data. It is used when the data to be written contains text and numbers

import java.util.Scanner;   // class used to take input from the user

public class Main  {  //start of the class

public static void main(String[] args)  {//start of main() function body

Scanner input = new Scanner(System.in);  //creates Scanner class object

System.out.print("Enter the input file name: ");  // prompts user to enter the input file name

String input_file = input.next();  //to  read and return the token i.e. input file name and store this into input_file String type variable

System.out.print("Enter the output file name: "); // prompts user to enter the output file name

String output_file = input.next();   /to  read and return the token i.e. output file name and store this into output_file String type variable

try   {/* try  defines a chunk of code to be tested for errors during the execute of this chunk. its a code block for reading from input file and writing to output file. This handles the exception if program cannot create or write to the file indicated. */

   FileReader inFile = new FileReader(input_file);  //creates object inFile of FileReader class to read the input_file contents

   Scanner scan = new Scanner(inFile);  //read and scans the input file

   PrintWriter outFile = new PrintWriter(output_file);  //creates object outFile of PrintWriter class to write to the output file. It is used to write output data in a readable text form.

   int count = 1;    //counts the line number      

   while (scan.hasNextLine())  {  //loop keeps checking for the next line in input file

    String lines = scan.nextLine();  // reads the entire line of the input file and stores that line contents in String lines

    outFile.println("/* " + count + " */ " + lines);  //each line represented with line number enclosed in /* */

    count++;  }   //increments the line number at each iteration    

    outFile.close();        }  //closes the output file after writing the contents from input file with each line of the input file enclosed in  /* */

catch (IOException e)  {  // catching the IOException and prints the following message if program cannot create input_file or write to the output_file

   System.out.println("Error processing file: " + e);    }     }   }

Explanation:

The program is well explained in the comments mentioned with each statement of the above program. The user is prompted to enter input and output file names. Then the program uses a while loop that scans through lines of the input file and count variable counts each line of input file. Then at each iteration the count variable counts a line of input file and line number of each line of the input file is enclosed in /* */ delimiters. The contents of input file, in which the line numbers of text lines of the input file are enclosed in /* */ delimiters, is written to the output file.

The screenshot of the program is attached along with the output file produces as a result of this program execution.

7 0
3 years ago
Which protocol can be used to send ipv6 packets over an ipv4 network?
Mariana [72]
There are three tunneling protocols. They are ISATAP, <span>teredo and 6TO4</span><span />
4 0
2 years ago
Jennifer’s company currently uses Windows Active Directory to provide centralized authentication, authorization, and accounting
Vsevolod [243]

Answer:

RADIUS

Explanation:

Remote Authentication Dial-In User Service (RADIUS) is a networking protocol that provides centralized Authentication, Authorization, and Accounting management for users connected to a network service. It can be used to authenticate anyone who is on your network.

RADIUS is a protocol that uses TCP or UDP as transport. RADIUS client is what is used to communicate with RADIUS servers at gateways of the network.

8 0
3 years ago
A switch that is configured to use the Spanning Tree Protocol will place a port in ____________ mode if sending traffic to it ma
Rashid [163]

Answer:

Blocking Mode    

Explanation:

Spanning Tree Protocol is used to allow path redundancy in the network without creating cycles/circles also called loops.

When two parts of the switched network are connected via two or more Layer 2 switches this result in a loop.

This affects the performance of the network as the result of broadcast packets flooding.

STP puts one port of the switch to forwarding mode and the rest of the ports within the same part of the network to the blocking mode to avoid broadcast packet flooding. STP puts all the ports that are allowing redundant paths to blocking mode and the one port that is left after this is placed in forward mode.

Spanning Tree Algorithm is used by STP to determine the optimal path  of switch to the network.

Bridge Protocol Data Units are used to share the information about the optimal path determined by the spanning tree algorithm with other switches.

This information helps STP to eliminate the redundant paths.

So this is how STP allows only one active path to the destination while blocking all other paths to avoid switching loop.

6 0
3 years ago
match the type of secondary storage devices to their examples. CD, hard disk, flash memory. answer choices: magnetic storage dev
alisha [4.7K]
Hi pupil here's your answer ::


➡➡➡➡➡➡➡➡➡➡➡➡➡

Column A Column B

1》CD = Optical Storage Devices

2》Hard Disk = Magnetic Storage Device

3》Flash Memory = Solid State Storage


⬅⬅⬅⬅⬅⬅⬅⬅⬅⬅⬅⬅⬅


Hope this helps. . . . . . .
3 0
2 years ago
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