Deadline

Your Assignment must be uploaded/ submitted before or on

23:59 November 11, 2009

(STUDENTS ARE STRICLY DIRECTED TO SUBMIT THEIR ASSIGNMENT BEFORE OR BY DUE DATE. NO ASSIGNMNENT AFTER DUE DATE WILL BE ACCEPTED VIA E.MAIL).

Rules for Marking

It should be clear that your Assignment will not get any credit IF:

• The Assignment submitted, via email, after due date.
• The submitted Assignment is not found as MS Word document file.
• There will be unnecessary, extra or irrelevant material.
• The Statistical notations/symbols are not well-written i.e., without using MathType software.
• The Assignment will be copied from handouts, internet or from any other student’s file. Copied material (from handouts, any book or by any website) will be awarded ZERO MARKS. It is PLAGIARISM and an Academic Crime.
• The medium of the course is English. Assignment in Urdu or Roman languages will not be accepted.
• Assignment means Comprehensive yet precise accurate details about the given topic quoting different sources (books/articles/websites etc.). Do not rely only on handouts. You can take data/information from different authentic sources (like books, magazines, website etc) BUT express/organize all the collected material in YOUR OWN WORDS. Only then you will get good marks.

Objective(s) of this Assignment:

• The assignment is being uploaded to build up the concepts about of measure of central tendency and measure of dispersion.

• Applying and verifying the empirical rule and Chebychev’s inequality for the given data.

• How to give the meaning/interpretation the obtained result from calculations.

• How to compute moments from the given data.

Assignment # 2 (Lessons 9-14)

Question 1: (Marks: 5+10=15)

a) Compute the mean deviation from the following data.

Groups	30-34	35-39	40-44	45-49	50-54
Frequency	10	15	5	11	9

b) The mean of 5 observations is 15 and variance is 9. If two more observations having values -3 and 10 are combined with these 5 observations, what will be the new mean and variance of 7 observations?

Question 2: (Marks: 5+10=15)

a) Mean and the standard deviation of a set of values is 100 and 5. Compute mean ±2S.D and mean ±3S.D. Also interpret the results in the light of (i) empirical rule (ii) Chebychev’s inequality.

b) Find the first four moments about X= 174.5 as well as about mean for the following frequency distribution.

Weights (pounds)	Frequency
110-119	1
120-129	4
130-139	17
140-149	28
150-159	25
160-169	18
170-179	13
180-189	6
190-199	5
200-209	2
210-219	1
Total	…

Discuss at

http://vuhelp.com/forum/viewtopic.php?f=5&t=143

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Assignment No. 02 SEMESTER Fall 2009 CS601- Data Communication Total Marks: 15 Due Date: 13/11/2009 Please read the following instructions carefully before solving & submitting assignment: Due Date: Your assignment must be uploaded/submitted before or on 13th November, 2009. Uploading instructions Please view the Assignment Submission Process document provided to you by the Virtual University for uploading assignments. o Assignment should be in .doc format. o Save your assignment with your ID (e.g. bx020200786.doc). o Assignment submission through email is highly discouraged. o No extended day for submission of the assignment by LMS will be given. Rules for Marking: It should be clear that your assignment will not get any credit if: o The assignment is submitted after due date. o The submitted assignment file is corrupted. o The assignment is copied. Note: Your answer must follow the below given specifications. You will be assigned zero marks if you do not follow these instructions. • Font style: “Times New Roman” • Font color: “Black” • Font size: “12” • Bold for heading only. • Font in Italic is not allowed at all. • No formatting or bullets are allowed to use. For any query about the assignment, contact at cs601@vu.edu.pk GOOD LUCK Marks: 15 Question 1 Why OSI is called Open System? [5 marks] Question 2 Draw the diagram for the signal 011110100 using NRZ-I and NRZ-L encoding schemes? [5+5] NRZ (not return to zero), I (inversion) and L (Level). Note: Use following signal state for first digit encoding as given while remaining part is on you to complete. Lectures Covered: This assignment covers Lecture # 7-14 Deadline Your assignment must be uploaded/submitted at or before 13-11-2009. Amplitude Time NRZ-L Time NRZ-I 0 1 1 1 1 0 1 0 0

Rules for Marking

It should be clear that your assignment will not get any credit if:

o The assignment is submitted after due date.
o The submitted assignment does not open
o The assignment is copied.
Objective

The objective of this assignment is to provide on hand experience of:

o Building of Finite Automata (FA)
o Building of Transition Graph(TG)
o Finding Regular Expression (RE) corresponding to a Transition Graph (TG)
Assignment

Question:

Consider the EVEN-ODD language of strings, defined over ∑= {a,b}, having even number of a’s and odd number of b,s.

a) Build an FA for the given language
b) Build a Transition Graph (TG) that accepts the same language but has fewer states than FA.
c) Find the Regular Expression (RE) corresponding to TG accepting EVEN-ODD language (Show all possible steps)



Deadline
Your assignment must be uploaded/submitted on or before Nov 11,2009

Dear Students,

Some important instructions for Examination.

1. Solve the questions with full procedures to get the full marks. Some students only write the answer of the question, which is incorrect. You will not get the full marks until you write the full procedure/steps.

2. Questions are designed in the way that you do not need to use Ms Excel for their solution. However for the questions which can be solved by both ways (i.e. by manual and by using MS Excel), you can choose to solve the question on Ms Word or solve them on Ms Excel and then paste it in exam software. If you are solving question on Ms Excel then you must have to mention the formula in separate cell (which should be adjacent to the cell in which you have used the formula) and then paste only those cells in which you have data (Do not take screen shot of whole screen and paste it in exam software). I am writing an example to explain.

Question:

Suppose you make a saving of Rs. 50,000 at the end of each month, assume an interest of 7% compounded monthly, how much will you have accumulated at the end of 4 years?

Method 1:

Payment per period or amount of annuity = 50000

Interest rate = 0.07

Interest rate compounded monthly so divide the interest rate by 12

Number of payments = number of year * compounding period = 4 * 12 = 48

= 50000[(1 + 0.07/12)⁴⁸ -1]/ (0.07/12)

= 2760461.81

Method 2:

Payment per period or amount of annuity	5000
Interest rate	0.07
compounded monthly so interest rate	0.07/12
Number of payments	4*12
($2,760,461.81)
`=FV(0.07/12,48,50000,0,0)

I put the formula in a cell which gave us the direct answer of the question, and also mention the formula which I used in a separate cell because when you copy and paste the cells in exams software then we cannot judge that if you have used correct formula or you just write the answer. So to see the whole procedure we need you to write the formula in separate and adjacent cell. You should first write ‘ before entering the formula, otherwise formula will not appear.

Vuhelp forum tutorial how to use it.Watch it and learn how to use it.


Regards Vuhelp