Prestige data is data set in the package carData in R. Download and install this package and use it to perform the following exercises. 1. (a) How can you show the structure of the data? What data structure is prestige and what data type is each variable in Prestige? (b) What are the dimensions of the data? (c) Display the first six and last six rows of the data (d) What is the highest and the lowest Income? which category of occupation(s) is(are) paid these incomes?
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- Prestige data is data set in the package carData in R. Download and install this package and use it to perform the following exercises. 1. (a) How can you show the structure of the data? What data structure is prestige and what data type is each variable in Prestige? (b) What are the dimensions of the data? (c) Display the first six and last six rows of the dataPrestige data is data set in the package carData in R. Download and install thispackage and use it to perform the following exercises.1. (a) How can you show the structure of the data? What data structure is prestige andwhat data type is each variable in Prestige?(b) What are the dimensions of the data?(c) Display the first six and last six rows of the data(d) What is the highest and the lowest Income? which category of occupation(s)is(are) paid these incomes?2. What percentage of occupational incumbents earn more than $25,000?3. What percentage of occupational incumbents earn above $20,000 and below $10,000?4. Construct a box plot to compare the distribution of Income according to type of occupation. Comment on the distribution of each box plot and the presence of outliers.Colour the box plots with different colours OF your choice.5. Construct a histogram for each for income of each type of occupation. Do your histograms conform to your results from the box plots?6. Select the data on…What happens if you try to decrease the scale or precision of a NUMBER column to a value less than the data already stored in the field?
- Having this information. StudentsAttribute Name Data TypeStudentID char(11)FirstName varchar(20)LastName varchar(20)Gender char(1)DateofBirth date CoursesAttribute Name Data TypeCourseCode varchar(6)CourseName varchar(70)Level char(2)Credits int RegistrationAttribute Name Data TypeStudentID char(11)CourseCode varchar(6)Grade decimal(2, 1) Write SQL code to: 1. How many courses are there on each level? 2. What is the average grade of courses that have been taken by the student with student ID 861103-2438? 3. Which students (studentID only) have the highest grade for the course ‘CS052’? 4. Find the courses (course codes only) that have been taken by both the student 861103-2438 and the student 123456-0980.Having this information. StudentsAttribute Name Data TypeStudentID char(11)FirstName varchar(20)LastName varchar(20)Gender char(1)DateofBirth date CoursesAttribute Name Data TypeCourseCode varchar(6)CourseName varchar(70)Level char(2)Credits int RegistrationAttribute Name Data TypeStudentID char(11)CourseCode varchar(6)Grade decimal(2, 1) Write SQL code to: 1. What are the student ID, the names, and birthday of the female students who were born before the last day of 1992? 2. How many students are registered in the course “PHY210”? 3. How many courses are offered by the department of Computer Science (i.e. course codes CS***)? 4. Which course(s) (couseCode and courseName) of level G1 give 5 credits?DataBaseMid2021-2.doc [Compatibility Mode] - Word Sign in Table Tools File Home Insert Design Layout References Mailings Review View Help Design Layout O Tell me what you want to do 요 Share SECOND OUENIVAR The following Data Base shows some sample data values for an extended form of the Zoo and Visitors. The significance of Visiting row is that the Visitor visits a specified Zoo in a specified date. Zoo : Zno zi Visitors : City Gaza Nusirat Yno Name Address Age V1 Fuad Gaza 55 Z2 V2 Rami Gaza 20 Z3 Gaza V3 Ahmed Nusirat 31 V4 Ahmed Gaza 45 V5 Ali Rafa 20 Visiting: Vno Zno Z1 Date V2 11-11-1998 15-10-1999 V1 Z3 11-01-2003 11-01-2003 06-03-1997 V2 Z2 V2 Z3 V1 Z2 V3 Z1 06-031997 V3 Z3 11-11-2005 V4 Z3 11-11-2005 V2 Z2 12-12-2005 Given the following relational Algebra querya Visitors Þyisitora.Nno = Visiting.VnolIIxna.Znal Visiting) A IIzag [8 City = “Caza' ( Zoo)]1 A- Find the result relation of the above query B What was the request of the relational algebra query above (make a query…
- Create the following indices, giving them an appropriate name in your spreadsheet (make sure to use the reverse-coded variable where relevant): Belief that climate change is a real phenomenon: Take the mean of scepticism_2, scepticism_6, and scepticism_7. Preferences for government intervention to solve problems in society: Take the mean of cog_1, cog_2, cog_3, cog_4, cog_5, and cog_6. Feeling of personal responsibility to act pro-environmentally: Take the mean of PN_1, PN_2, PN_3, PN_4, PN_6, and PN_7. When creating indices, we may be interested to see if each item used in the index measures the same underlying variable of interest (known as reliability or consistency). There are two common ways to assess reliability: either look at the correlation between items in the index, or use a summary measure called Cronbach’s alphaCronbach’s alpha A measure used to assess the extent to which a set of items is a reliable or consistent measure of a concept. This measure ranges from 0–1,…I need help with this python code 1. The starter code has been created for you. 2. Using the Yahoo Finance module, download the stock data for the stocks AMC and GME between December 1, 2021 and around the day you started this exercise (June or July 2021) in intervals of one day. You will focus only on the Close price and Volume traded. 3. Using the data downloaded from yfinance, create a new DataFrame that contains these five columns: Day, AMC Close, AMC Volume, GME Close, and GME Volume. Note the index for the DataFrame is the YYYY-MM-DD date, but you will need to make it a column. 4. Apply pd.melt() to this new DataFrame created in Step 3, such that the Day column is kept. The variable column will contain either AMC Close, AMC Volume, GME Close, and GME Volume. Rename this column to 'Type'. The values column will contain either the closing price or the volume traded for the respective stock on that day. 5. Create a FacetGrid of four lineplots on the stock data using the DataFrame…Task 3: The Car Maintenance team wants to insert and store the following maintenance types to the MAINTENANCE_TYPES table: ID: 1; Description: Tire Change; Price: 50 ID: 2; Description; Oil Change; Price: 45 ID: 3; Description; Full Cleaning; Price: 100 ID: 4; Description; Gas Pump Change; Price: 145 Add the four maintenance types to the MAINTENANCE_TYPES table.