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Hatshy [7]
3 years ago
10

A student who used a regression model that included indicator variables was upset when receiving only the following output on th

e multiple regression printout: X TRANSPOSE X SINGULAR. What is a likely source of the difficulty
Computers and Technology
1 answer:
jeka57 [31]3 years ago
4 0

Answer:

This is a multicolinearity problem and the student should determine the variable(s) that cause(s) the problem and remove it.

Explanation:

This information means that there exists a linear combination between the independent variables. The problem might have developed due to multicolinearity producing almost perfectly linearly dependent columns.

This could also be as a results of single matrix created when the student use an incorrect indicator variables and included an additional indicator column which created linearly dependent columns.

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Answer:

Explanation:

Mouse is an example of input device

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WHAT ARE THE CONTENTS THAT WE SHOULD USE FOR THE PRESENTATION OF DIGITAL WORLD
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Answer:

Introduction

Importance

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8 0
3 years ago
A friend a just opened his own barber shop and has asked you to develop a program to track the type of service the customer is r
True [87]

Answer:

class Barber(object):

   barber_shop = "Big AI's barber shop"

   def __init__(self, customer_name, type_of_service=[], tip=0):

       self.cust_name = customer_name

       self.tos = type_of_service

       self.tip = tip

   def service_type(self, *args):

       for i in args:

           self.tos.append(i)

   def total(self):

       

       services = {'trimming':10, 'hair_cut':20, 'shaving':15, 'washing':5, 'dyeing':5}

       contain = ''

       total = 0

       for service in self.tos:

           if service in services.keys():

               total += services[service]

               contain += f'{service}: {services[service]}\n'

       

       print(self.barber_shop,'\n', self.cust_name,'\n', 'Services:',contain.splitlines(),'\n', \

           f'total: ${total}', '\n',f'Tip: ${self.tip}')

mycust = Barber('John',['washing'],6 )

mycust.service_type('shaving', 'dyeing')

mycust.total()

Explanation:

The Barber class is a blueprint used to create an object instance of customers that visits the barber-shop. It has two methods 'service_type' and 'total' which are just defined functions of the class that appends services to the type of service variable and total that prints the total cost of services on the screen.

4 0
3 years ago
What can you do to help create a safe online environment? Check all that apply.
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3,4,6 this is the answer

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4 years ago
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Write a program called GradesAverage, which prompts user for the number of students, reads it from the keyboard, and saves it in
marishachu [46]

Answer:

See Explaination

Explanation:

import java.io.BufferedReader;

import java.io.InputStreamReader;

public class GradesAverage {

private static int checkNum(String num) {

int tmpNum;

try {

tmpNum = Integer.valueOf(num);

} catch(IllegalArgumentException e) {

System.out.println("You did not enter an integer.");

return -1;

}

return tmpNum;

}

private static boolean validNum(int num) {

if(num>=0 && num<=100) {

return true;

}

System.out.println("You did not enter an integer, try again

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