Examine the R code and consult the associated dataframe df shown below. What size is being stored in the variable size? size=df[1,2] a. No size is being stored b. 0.12 Mb c. Chr 1 d. 0.17 Mb
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Examine the R code and consult the associated dataframe df shown below. What size is being stored in the variable size?
size=df[1,2]
a. No size is being stored
b. 0.12 Mb
c. Chr 1
d. 0.17 Mb
Step by step
Solved in 2 steps
- MAX_VAL.09.In java create an application to manage your data base information the database is already created in mysql tables, the tables are fill, So the user can use your database application user friendly Retrieve all data: Given a table name, retrieve all data from the table and present it to the user. Average: Given a table name and a column name, return the average of the column. Here the assumption is that the column type will be numeric (e.g., cost column). Insert: Given a table name, your program should show the column names of that table and ask the users to input new data to the table. In case of errors, your program should directly show the MySQL errors to the users. Assumption 1: Users will enter data according to the database constraints. Assumption 2: Users will input one record at a time. Delete: Given a table name, your program should show the column names of that table and ask the users to input data that they want to delete. Assumption 1: Users will enter data according to the…Hospital Directory. Develop a directory look-up program for Community General Hospital. Create multiple 1D arrays, predefined with the following information (table below). The ID column serves as a common index; the rest of the columns should be stored in individual arrays of the appropriate data type (especially important for the last column!).You will then use a loop to create a menu that repeatedly gives the user the following choices: List all employee records (in order) Display an employee record by ID◦ The user should enter a valid ID. If the employee exists, print out their information. Otherwise, tell the user that it is an invalid ID Display an employee record by last name◦ The user should enter a valid last name. If employee(s) exist, print out their information. Otherwise, tell the user that there are no records. Quit Sample Output:[Community General Hospital Directory]1) List all employees2) Search employee records by ID3) Search employee records by Last Name4)…
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- Write a program (call it chr21_gene_names.py) that asks the user to enter a gene symbol and then prints the description for that gene based on data from the chr21_genes.txt file. The program should give an error message if the entered symbol is not found in the table (the user should should not have to worry about case, i.e. it will be a case-insensitive search). The program should continue to ask the user for genes until "quit" or "exit" is given (case-insensitive). Make sure to prompt the user to enter the quit to end the program. Use Dictionaries to solve this problem.HINT: Feel free to use as Dictionary of Dictionaries, but it is not required. HINT: First read the entire text file into a Dictionary that maps the association between gene symbol and description. Once again, make sure to use a Dictionary. Remember to have these command line options: $ python3 chr21_gene_names.py -h usage: chr21_gene_names.py [-h] -i INFILE Open chr21_genes.txt, and ask user for a gene name optional…def read_routes (routes_source: TextI0, airports: Airport Dict) -> RouteDict: "Return the flight routes from routes_source, including only the ones that have an entry in airports. If there are multiple routes between routes_source and a destination (on different airlines for example), include the destination only once. Routes that include null airport IDs should still be included, but routes that have empty IATA should be excluded. TENN >>> from io import StringI0 >>> routes src= StringIO(TEST_ROUTES_SRC) >>> actual = read_routes(routes_src, TEST AIRPORTS_DICT) >>> actual == TEST_ROUTES_DICT_FOUR_CITIES True DE TELE {} routes = src_index ROUTE_DATA_INDEXES["Source airport"] dst index ROUTE_DATA_INDEXES["Destination airport"] # Complete this function. # Note that each value in the resulting Hictionary is a set of IATA codes.In The Readline Technique, on page 179, you learned how to read somefiles from the Time Series Data Library. In particular, you learned aboutthe Hopedale data set, which describes the number of colored fox fur peltsproduced from 1834 to 1842. This file contains one value per year perline.a. Write an outline in English of the algorithm you would use to readthe values from this data set to compute the average number of peltsproduced per year.b. Translate your algorithm into Python by writing a function namedhopedale_average that takes a filename as a parameter and returns theaverage number of pelts produced per year.
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