Population Data
If you have downloaded this book’s source code (the companion website is available at www.pearsonhighered.com/gaddis), you will find a file named USPopulation.txt in the Chapter 7 folder. The file contains the midyear population of the United States, in thousands, during the years 1950 to 1990. The first line in the file contains the population for 1950, the second line contains the population for 1951, and so forth.
Write a
- The average annual change in population during the time period
- The year with the greatest increase in population during the time period
- The year with the smallest increase in population during the time period
Want to see the full answer?
Check out a sample textbook solutionChapter 7 Solutions
Starting Out with Java: Early Objects (6th Edition)
Additional Engineering Textbook Solutions
Modern Database Management (12th Edition)
C Programming Language
Problem Solving with C++ (9th Edition)
Starting Out with C++: Early Objects (9th Edition)
Concepts of Programming Languages (11th Edition)
C++ How to Program (10th Edition)
- The above screen is used to browse the products table it uses the ProductDAO.java file, it calls the getProductByCriteria() function which should accept a parameter, this parameter should be the criteria that would be built from the two combo boxes and the text box, and queries the products table.The getProductByCriteria() function should return a list of Product objects that matches the criteria specified. Modify the function so that it accepts a string paramater consisting of the fields from the combo boxes and a price number from the text box separated by commas and use this string to modify the query in the function to return the desired result set. public List<Product> getProductByCriteria() //MAKE MODIFICATIONS TO THIS FUNCTION SO IT CAN TAKE PARAMETER(S) { if (openConnection()) { try{ List<Product> items = new ArrayList <> (); Product temp = null; String…arrow_forward7. World Series Winners In this chapter's source code folder (available on the Computer Science Portal at www. pearsonhighered.com/gaddis), you will find a text file named WorldSeriesWinners. txt. This file contains a chronological list of the World Series' winning teams from 1903 through 2009. The first line in the file is the name of the team that won in 1903, and the last line is the name of the team that won in 2009. (Note the World Series was not played in 1904 or 1994. There are entries in the file indicating this.) Write a program that reads this file and creates a dictionary in which the keys are the names of the teams, and each key's associated value is the number of times the team has won the World Series. The program should also create a dictionary in which the keys are the years, and each key's associated value is the name of the team that won that year. The program should prompt the user for a year in the range of 1903 through 2009. It should then display the name of the…arrow_forward#Data is given in the order: Serial Number | Item Name | Quantity | Priceprice_list = [["01","Keyboard",4,200.0],["02","Mouse",4,150.0],["03","Printer",2,300.0]] #Write Code to increase the price of all the items by 50 taka #Code1 #Write code to add a new item to the list using user input #Code2 print()#Print the list using nested loops #Code3 #Sample output given below: Enter Serial: 05Enter Item Name: MonitorEnter Quantity: 200Enter Price: 50 01Keyboard4250.0-----------------02Mouse4200.0-----------------03Printer2350.0-----------------05Monitor20050-----------------arrow_forward
- Python Programming Assignment: Create a dictionary that takes a basketball team's information (that includes team's name and points) as parameter, creates a teams_dict and returns it. Also, create a parameter for write_file parameter that opens current results text file in write mode and writes the dictionary information to file as per format and closes the file.arrow_forward1994 Weekly Gas GraphIn the student sample programs for this book, you will find a text file named 1994_Weekly_Gas_Averages.txt. The file contains the average gas price for each week in the year 1994.(There are 52 lines in the file.) Using matplotlib, write a Python program that reads thecontents of the file then plots the data as either a line graph or a bar chart. Be sure to displaymeaningful labels along the X and Y axes, as well as the tick marks. (in python)arrow_forwardFile names: color_square.py, chessboard.py, test_squares.py Positions on a chess board are identified by a letter and a number. The letter identifies the column; the number identifies the row. See the image below. You will provide the functions that allow us to determine: if a chessboard square is either black or white, given its coordinates. If the row/column is valid or not for the standard chessboard For example, if we pass in “d” for the column and 4 for the row, your function that determines color should return the string: “BLACK”. If we pass in "k" for the column to your function that validates columns, that function should return the boolean False. Requirements: Your function for validating the column should be able to accept upper or lowercase strings as parameters. Your functions for validating the row should be able to accept integers or strings as parameters. Your function that determines black-or-white may assume that the input has been validated prior to us calling…arrow_forward
- Pendant Publishing edits multi-volume manuscripts for many authors. For each volume, they want a label that contains the author’s name, the title of the work, and a volume number in the form Volume 9 of 9. For example, a set of three volumes requires three labels: Volume 1 of 3, Volume 2 of 3, and Volume 3 of 3. Design an application that reads records that contain an author’s name, the title of the work, and the number of volumes. The application must read the records until eof is encountered and produce enough labels for each work. The flowchart must include a call symbol, at the beginning, to redirect the input to the external data file. create a solution algorithm using pseudocode create a flowchart using RAPTORarrow_forwardFinish this program from the code posted below! Note: There should be two files Main.py and Contact.py You will implement the edit_contact function. In the function, do the following: Ask the user to enter the name of the contact they want to edit. If the contact exists, in a loop, give them the following choices Remove one of the phone numbers from that Contact. Add a phone number to that Contact. Change that Contact's email address. Change that Contact's name (if they do this, you will have to remove the key/value pair from the dictionary and re-add it, since the key is the contact’s name. Use the dictionary's pop method for this!) Stop editing the Contact Once the user is finished making changes to the Contact, the function should return. Code:from Contact import Contactimport pickledef load_contacts():""" Unpickle the data on mydata.dat and save it to a dictionaryReturn an empty dictionary if the file doesn't exist """try:with open("mydata.dat", 'rb') as file:return…arrow_forwardTranscribed Image Text A summer camp offers a morning session and an afternoon session. The list morningList contains the names of all children attending the morning session, and the list afternoonList contains the names of all children attending the afternoon session. Only children who attend both sessions eat lunch at the camp. The camp director wants to create lunchList, which will contain the names of children attending both sessions. The following code segment is intended to create lunchList, which is initially empty. It uses the procedure IsFound (list, name), which returns true if name is found in list and returns false otherwise. FOR EACH child IN morningList { <MISSING CODE> Which of the following could replace <MISSING CODE> so that the code segment works as intended? IF (IsFound (afternoonList, child)) { A APPEND (lunchList, child)arrow_forward
- In the attached city list.txt file, the names of the provinces in Turkey are given in a single line according to the format given in Figure 1. In the application you will write, write the city names read from this file into the license plate list.txt file in the format shown in Figure 2. In more descriptive terms, citylist.txt is a file given to you. license plate list.txt is the file you will get with your code. city list: Adana, Adıyaman, Afyon, Ağrı, Amasya, Ankara, Antalya, Artvin, Aydın, Balıkesir, Bilecik, Bingöl, Bitlis, Bolu, Burdur, Bursa, Çanakkale, Çankırı, Çorum, Denizli, Diyarbakır, Edirne, Elazığ, Erzincan, Erzurum, Eskişehir, Gaziantep, Giresun, Gümüşhane, Hakkari, Hatay, Isparta, İçel (Mersin), İstanbul, İzmir, Kars, Kastamonu, Kayseri, Kırklareli, Kırşehir, Kocaeli, Konya, Kütahya, Malatya, Manisa, Kahramanmaraş, Mardin, Muğla, Muş, Nevşehir, Niğde, Ordu, Rize, Sakarya, Samsun, Siirt, Sinop, Sivas, Tekirdağ, Tokat, Trabzon, Tunceli, Şanlıurfa, Uşak, Van, Yozgat,…arrow_forwardIn the student sample program files for this chapter, you will find a text file namedGasPrices.txt. The file contains the weekly average prices for a gallon of gas in the UnitedStates, beginning on April 5th, 1993, and ending on August 26th, 2013. Figure 8-7 shows anexample of the first few lines of the file’s contents:Figure 8-7 The GasPrices.txt fileDescriptionEach line in the file contains the average price for a gallon of gas on a specific date. Each line isformatted in the following way:MM-DD-YYYY:PriceMM is the two-digit month, DD is the two-digit day, and YYYY is the four-digit year. Price is theaverage 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 andperform the following calculations:Average Price Per Year: Calculate the average price of gas per year, for each year in thefile. (The file’s data starts in April of 1993, and it ends in August 2013. Use the data that ispresent for the…arrow_forwardA Personal Fitness Tracker is a wearable device that tracks your physical activity, calories burned, heart rate, sleeping patterns, and so on. One common physical activity that most of these devices track is the number of steps you take each day. The steps.txt file contains the number of steps a person has taken each day for a year. There are 365 lines in the file, and each line contains the number of steps taken during a day. (The first line is the number of steps taken on January 1st, the second line is the number of steps taken on January 2nd, and so forth.) Write a program that reads the file, then displays the average number of steps taken for each month. (The data is from a year that was not a leap year, so February has 28 days.) You don't need to see the file , Just write a code using the "file" like this def main(): with open("steps.txt", "r") as file:arrow_forward
- Programming with Microsoft Visual Basic 2017Computer ScienceISBN:9781337102124Author:Diane ZakPublisher:Cengage Learning