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Gala2k [10]
2 years ago
12

Pls help!!

Computers and Technology
1 answer:
alexira [117]2 years ago
7 0

Answer:

4.24

Explanation:

First you find the mean of the data set, which is 7. Then to find standard deviation you have to follow the formula which tells you to subtract the mean from each number under the square root : √(2 - 7)^2 + (9 - 7)^2 + (10 - 7)^2 + (4 - 7)^2 + (8 - 7)^2 + (4 - 7)^2 + (12 - 7). Once you solve the parenthesis you square it, once you square it the negatives won't matter. That will leave you with this : √(25 + 4 + 9 + 9 + 25). The formula tells you to find the sum of those numbers (which is 72) then subtract one from how many numbers there are, 5 - 1 = 4, and divide your sum by that number. So 72 / 4 = 18. Then you find the square root of 18 and that becomes your answer.

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Papessa [141]

Answer:

Explanation:

Sorry it  is in Java, though you can covert it using converter

public class Exercise {

public static void main(String[] args) {

 Scanner input = new Scanner(System.in);

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 int negatives = 0;  // Count the number of negative numbers

 int count = 0;   // Count all numbers

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 int number = input.nextInt();

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  System.exit(1);

 }

 while (number != 0) {// Test for sentinel value

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   positives++; // Increase positives

  else

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  number = input.nextInt();

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 System.out.println(

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}

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7 0
3 years ago
for java ?(Business: check ISBN-13)ISBN-13 is a new standard for identifying books. It uses 13 digits d1d2d3d4d5d6d7d8d9d10d11d1
ludmilkaskok [199]

Answer:

In Java:

import java.util.*;

public class Main{

public static void main(String[] args) {

 Scanner input = new Scanner(System.in);

 String isbn;

 System.out.print("First 1:2 digits: ");

 isbn = input.nextLine();

 if(isbn.length()==12){

 int chksum = 0;

 for(int i = 0; i<12;i++){

     if((i+1)%2==0){      chksum+= 3 * Character.getNumericValue(isbn.charAt(i));          }

     else{          chksum+=Character.getNumericValue(isbn.charAt(i));          }  }

 chksum%=10;

 chksum=10-chksum;

 if(chksum==10){

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 else{

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 else{

     System.out.print("Invalid Input");

 }     }}

Explanation:

See attachment for explanation where comments are used to explain each line

Download txt
6 0
3 years ago
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