BE01106 Business Statistics Assignment Part 1

Subject Code & Title :- BE01106 Business Statistics
Assessment Type :- Assignment
The BEO1106 assignment has a total of seven (7) tasks to complete Each task will be marked out of 10 points. The total points available for the entire assignment is 70 points The 70 points will be converted to 35% of the overall assessments for this unit.
BE01106 Business Statistics Assignment Part 1

BE01106 Business Statistics Assignment Part 1

The assignment will be submitted in three parts Part I consists of Task 1 only Task 1 is involved in collecting a set of sample data. The sample data collected in Part I will then be used to answer the questions in Part II and Part III. Part I is a preparation for Part II and Part III.

Assignment Part I will be submitted to the VU Collaborate Assignment Dropbox before Seminar 6.

Introduction :-
The assignment data Population Property Data.xls file can be accessed from the Assessment Information page on the unit website. The assignment data file contains real estate sales data for a population of 400 properties (in the range A1:I401) around Melbourne in a particular week. You are required to select a random sample of 50 properties from this population. The variables in the data set are as follows:
V1 = Region where property is located (1 = North, 2 = West, 3 = East, 4 = Central)
V2 = Property type (0 = Unit, 1 = House)
V3 = Sale result (1 = Sold at auction, 2 = Passed-in, 3 = Private sale, 4 = Sold before auction Note that a blank cell for this variable indicates that the property did not sell.
V4 = Building type (1 = Brick, 2 = Brick veneer, 3 = Weatherboard, 4 = Vacant land)
V5 = Number of rooms
V6 = Land size (Square meters)
V7 = Sold Price ($000s)
V8 = Advertised Price ($000s)
Column A (PN), contains the property identification numbers from 001 to 400 properties.

BE01106 Business Statistics Assignment Part 1

TASK 1 Random Sampling and Creating Your Sample Data File
To select your random sample, you need to:
• Open the Table of Random Number.doc file on computer screen. The random sampling process works on this file and the completed file will be submitted as part of the assignment.
• Open the Population Property Data.xls file on computer screen.
• Create a Sample Property Data.xlsx Excel file and keep it open on computer screen through out the whole process of completing the Task 1. Upon completion this file is also be submitted as part of the assignment.

To select the sample data that form the basis of your assignment Part II and Part III you will need to make use of the random number table provided as a MS word file Table of Random Numbers.doc on the Assessment Information page of the unit website. The table of random numbers is, as the title suggests a sequence of randomly generated numerical digits 0 to 9 These digits are arranged in a table with ten columns numbered 0 to 9 and one hundred rows numbered 01 to 00 spread over two pages. The entries in each column of each row consist of six single digits. For example, the cell corresponding to Column 7 row 49 has a six digit number of

Your first task is to select 50 three digit random property numbers ranging from 001 to 400 from the table of random numbers.The type of simple random sampling that we will be engaged in here is termed with out replacement because we specifically do not want to allow a property number to be selected more than once. If we allowed this to occur we would run the risk of the sample being biased and so not representative of the population In the population a particular property only occurs once and so it would not do to allow a particular property to occur more than once in your sample. In this way we can be more assured that the sample is typical of the population and so perform inferential statistical analyses about the population with some confidence. The file is track changes protected which means that any changes by users will be shown up on the file so your lecturer will be able to monitor the progress of the random sample selection process and award marks accordingly.

BE01106 Business Statistics Assignment Part 1

In order to select your 50 random property numbers you will need to first go to a starting position row and column in the random number table Note ~ not the population property data defined by the last three digits of your VU student identification number The last two digits of your VU ID number identifies the row and the third last digit identifies the column of your relatively unique starting position.

For demonstration purposes if the last three digits of your student identification were 7, 4 and 9 (i.e. 749 you would commence your property number selection at the starting position – row 49 and column 7 of the random number table. You are required to colour high light the starting row number 49 and the starting column number 7 refer to the Model Answer for Part I on VU Collaborate). You should be able to see that the six digit number occupying that position

Then moving across the row from left to right from the starting position examine the first three digits of each six digit number and then the second three digits in each of the columns of the table. If any of these three digit numbers are between 001 to 400 inclusive they are good numbers (the population data numbered from 001 to 400. Ignore any number greater than 400 or equal to 000. Those numbers cannot be used in our sample selection process.

BE01106 Business Statistics Assignment Part 1

BE01106 Business Statistics Assignment Part 1

Continue reading across row 49 from left to right starting at column 7 as instructed you would encounter the following three digit good numbers:

You need to record the first good property numbers i.e. 205, and go to the Population Property Data.xls file located on the Assessment Information page of the unit website. On the spreadsheet, scroll down the PN column to locate 205 (note: do not select the Excel spread sheet row number 205. Please Select the row with 205 in the PN column. PN 205 refers to the two-hundred-and-fifth observation in the Population Porperty Data file. At this row, high light from 205 under the PN column across to the right up to the V8 column use Cut and Paste procedure to cut the row of data and paste the data into a new Excel file (name it and save it as SamplePropertyData.xlsx). Next is to repeat the Cut and Paste process for PN 184 and for PN 185 and the sub sequent three digit good numbers selected from Random Number Table up to the point when the row of the
spread sheet in the SamplePropertyData.xlsx file grown up to 50 rows of data. Make sure you copy the column headings, PN, V1, … V8 into your sample data file as the heading for the columns.

Each time a three-digit number is selected from the Random Number Table yellow highlight the number to indicate that the number has been selected for the sample so your lecturer can award marks to the correct procedure. It is possible that you may come across some three digit good numbers more than once (we call them repeated numbers. The use of the Cut and Paste procedure is the with out replacement sampling procedure to ensure that no repeated PN number and the corresponding data can be select more than once in this sample selection process. When a repeated number is found strike through the numbers to cross out the repeated number to indicate that this good number has not been selected as a sample observation (refer to the Assignment Part I Model Answers file for example).

Note that if you reach to the end of Row 50 on the first page of the Random Number Table but still not yet to collect 50 good numbers continue the process on to Row 51 on the top of the second page of the Random Number Table as the same practice in the Assignment Part I Model Answer. Similarly if you reach to the end of Row 00 on the second page proceed on to row 01 on the top of the first page. Once 50 good numbers are selected and the 50 rows of data have been copied from the PopulationPropertyData file into the Sample Property Data file this will form a completed sample data set occupying spread sheet Column A to Column I and spreadsheet Row 1 to Row 51 Refer to the Assignment Part I Model Answers file on the Assessment Information.

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