Sales Analysis
The file SalesData.txt, in this chapter’s source code folder, contains the dollar amount of sales that a retail store made each day for a number of weeks. Each line in the file contains seven numbers, which are the sales numbers for one week. The numbers are separated by a comma. The following line is an example from the file:
2541.36, 2965.88, 1965.32, 1845.23, 7021.11, 9652.74, 1469.36
Write a
- The total sales for each week
- The average daily sales for each week
- The total sales for all of the weeks
- The average weekly sales
- The week number that had the highest amount of sales
- The week number that had the lowest amount of sales
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Chapter 9 Solutions
Starting Out with Java: From Control Structures through Objects (7th Edition) (What's New in Computer Science)
Additional Engineering Textbook Solutions
Java: An Introduction to Problem Solving and Programming (8th Edition)
Computer Science: An Overview (13th Edition) (What's New in Computer Science)
Programming in C
Database Concepts (8th Edition)
Web Development and Design Foundations with HTML5 (8th Edition)
Software Engineering (10th Edition)
- 4. WarningWrite a program that will read in a file of student academic credit data and create a list of students on academic warning. The list of students on warning will be written to a file. Each line of the input file will contain the student name (a single String with no spaces), the number of semester hours earned (an integer), the total quality points earned (a double). The following shows part of a typical data file:Smith 27 83.7Jones 21 28.35Walker 96 182.4Doe 60 150The program should compute the GPA (grade point or quality point average) for each student (the total quality points divided by the number of semester hours) then write the student information to the output file if that student should be put on academic warning. A student will be on warning if he/she has a GPA less than 1.5 for students with fewer than 30 semester hours credit, 1.75 for students with fewer than 60 semester hours credit, and 2.0 for all other students. The file Warning.java contains a skeleton…arrow_forwardin java 8.8 LAB: Course Grade Write a program that reads the student information from a tab separated values (tsv) file. The program then creates a text file that records the course grades of the students. Each row of the tsv file contains the Last Name, First Name, Midterm1 score, Midterm2 score, and the Final score of a student. A sample of the student information is provided in StudentInfo.tsv. Assume the number of students is at least 1 and at most 20. Assume also the last names and first names do not contain whitespaces. The program performs the following tasks: Read the file name of the tsv file from the user. Open the tsv file and read the student information. Compute the average exam score of each student. Assign a letter grade to each student based on the average exam score in the following scale: A: 90 =< x B: 80 =< x < 90 C: 70 =< x < 80 D: 60 =< x < 70 F: x < 60 Compute the average of each exam. Output the last names, first names, exam…arrow_forwardPlot Mean, Variance and Standard Deviation using matplotlib.2.a. Write a class with name EmployeeInfo that will keep track of employees name,salary, post, and joining year. Create a text file with information of five employeesof a company. Each row in the file should contain four columns. Read this filewith python and using the EmployeeInfo class, find out the employee with highestsalary and also find out the employee with longer time with company.b. Using the EmployeeInfo class and the same file, sort the employees in ascendingorder of salary using list’s functions.arrow_forward
- 1. // MAINTENANCE10 // This program accepts data about 100 books and // determines a price for each. // The price is 10 cents per page for the // first 200 pages, then 8 cents // per page after that. // After pricing, all the data is displayed. // Create a Book class and modify the program to use // an array of Book objects instead of individual // data items. start Declarations num SIZE = 100 num sub string titles[SIZE] num pages[SIZE] num prices[SIZE] num MIN_PAGES = 200 num HIGH_PRICE = 0.10 num LOW_PRICE = 0.08 sub = 0 while sub < SIZE output "Enter title … " input title[sub] output "Enter pages … " input pages[sub] if pages[sub]arrow_forwardComputer Science The program below uses a class, DomainAvailabilityTools, which includes a table of registered domain names. The main function prompts for domain names until the user presses Enter at the prompt. The domain name is checked against a list of the registered domains in the DomainAvailabilityTools class. If the domain name is not available, the program displays similar domain names. #include <iostream>#include <string>#include <cctype>#include "DomainAvailabilityTools.h"using namespace std; // *********************************************************************** // prompts user string. Returns string.string GetString(string prompt) {string userInput; cout << prompt << endl;cin >> userInput; return userInput;}// *********************************************************************** int main() {const string PROMPT_DOMAIN_NAME ="\nEnter a domain name to check availability (Enter to exit): ";DomainAvailabilityTools dvTools; string…arrow_forwardChapter 5. PC #17. Rock, Paper, Scissors Game (page 317) Write a program that lets the user play the game of Rock, Paper, Scissors against the computer. The program should work as follows. 2. When the program begins, a random number in the range of 0 through 2 is generated. If the number is 0, then the computer has chosen rock. If the number is 1, then the computer has chosen paper. If the number is 2, then the computer has chosen scissors. (Do not display the computer choice yet.) 3. The user enters his or her choice of "rock", "paper", or "scissors" at the keyboard. You should use 1 for rock, 2 for paper, and 3 for scissors. Internally, you can store 0, 1, and 2 as the user choice, to match with the above schema. 4. Both user and computer choices are displayed. 5. A winner is selected according to the following rules: If one player chooses rock and the other player chooses scissors, then rock wins. (The rock smashes the scissors.) If one player chooses scissors and…arrow_forward
- Java Problem The teacher at a school needs help grading an exam with a number of True/False questions. The students’ IDs and test answers are stored in a file. The first entry of the file contains the answer to the test in the form: TTFTFTTTFTFTFFTTFTTF Every other entry in the file is the student’s ID, followed by a blank, followed by the students’ response. For instance, the entry: ABC54102 T FTFTFTTTFTTFTTF TF The student’s ID is ABC54102, answer to question 1 is True, the answer to question 3 is False. Also, the student did not answer question 2 and question 18. The exam has 20 questions. Here is the grading policy: each correct answer is awarded two points, each wrong answer get -1 point, and no answer gets 0 point. Write a program that processes the test data. The output should be the student’s ID, followed by the answers, followed by the test score (total points), followed by the test grade. Assume the following grade scale will be used: 90%-100%, A; 80%-89.99%, B; 70%-79.99%,…arrow_forwardSTARTING OUT WITH PYTHON FOURTH EDITION TONY GRADDIS CHAPTER 8, QUESTION 14 GAS PRICE SOLVE a question from "Starting out with Python" by Tony Gaddis Chapter 8, question number 14, the title "Gas Prices" In the student sample program files for this chapter, you will find a text file named GasPrices.txt. The file contains the weekly average prices for a gallon of gas in the United States, beginning on April 5th, 1993, and ending on August 26th, 2013. Figure 8-7 shows an example of the first few lines of the file's contents:(ATTACHED) Each line in the file contains the average price for a gallon of gas on a specific date. Each line is formatted in the following way: MM-DD-YYYY: price MM is the two-digit month, DD is the two-digit day, and YYYY is the four-digit year. Price is the average price per gallon of gas on the specified date. For this assignment, you are to write one or more programs that read the contents of the file and perform the following calculations: Average Price Per…arrow_forward/* * CECS 2223, Computer Programming II Laboratory * Winter 2021, Sec. 05 * Date: April 20, 2022 * Topic: Composition * File name: SP-22_lab05 * This file implements the Catalogs class * Name: [YOUR NAME HERE], ID#[YOUR ID NUMBER HERE] * Complete the C++ code as required */ // write the correct include statement int main(){ // create the catalog for Polytechnic University // call the method to print the university's catalog // add the following courses to the catalog: // MATH 1350 Calculus I, 4 credits // CECS 2233 Computer Programming II Lab, 0 credits // EE 1130 Freshman Design for Electrical and Computer Engineers, 3 credits // CECS 2222 Computer Programming II, 4 credits // print the catalog to show all courses added // print the phrase "Program developed by YOUR NAME, YOUR ID#" // with your personal information. return 0; }arrow_forward
- a. The mean of a list of numbers is its arithmetic average. The median of a list is its middle value when the values are placed in order. For example, if a list contains 1, 4, 7, 8, and 10, then the mean is 6 and the median is 7. Write an application that allows you to enter five integers and displays the values, their mean, and their median. Save the files as MeanMedian.java. b. Revise the MeanMedian class so that the user can enter any number of values up to 20. If the list has an even number of values, the median is the numeric average of the values in the two middle positions. Save the file as MeanMedian2.java.arrow_forwardJAVA PROGRAM ASAP Please CREATE A program ASAP BECAUSE IT IS LAB ASSIGNMENT #2 so it passes all the test cases. The program must pass the test case when uploaded to Hypergrade. Chapter 9. PC #16. Morse Code Translator (modified *** Read carefully ***) Morse code is a code where each letter of the English alphabet, each digit, and various punctuation characters are represented by a series of dots and dashes. Write a program that asks the user to enter a file name containing morse code, and then converts that code to text and prints it on the screen. The Morse code table is given in a text file morse.txt. When printing resulting text, display one sentence on each line. There should be no extra spaces at the beginning and at the end of the output. Mose.txt 0 -----1 .----2 ..---3 ...--4 ....-5 .....6 -....7 --...8 ---..9 ----., --..--. .-.-.-? ..--..A .-B -...C -.-.D -..E .F ..-.G --.H ....I ..J .---K -.-L…arrow_forwardJAVA PROGRAM (Create large dataset) Create a data file with 500 lines. Each line in the file consists of a faculty member’s first name, last name, rank, and salary. The faculty member’s first name and last name for the ith line are FirstNamei and LastNamei. The rank is randomly generated as assistant, associate, and full. The salary is randomly generated as a number with two digits after the decimal point. The salary for an assistant professor should be in the range from 50,000 to 80,000, for associate professor from 60,000 to 110,000, and for full professor from 75,000 to 130,000. Save the file in Salary.txt. Here are some sample data: FirstName1 LastName1 assistant 60055.95 FirstName2 LastName2 associate 81112.45 . . . FirstName500 LastName500 full 92255.21arrow_forward
- EBK JAVA PROGRAMMINGComputer ScienceISBN:9781337671385Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENTC++ Programming: From Problem Analysis to Program...Computer ScienceISBN:9781337102087Author:D. S. MalikPublisher:Cengage Learning