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Assignment No.1 (Course STA301)

Fall 2009 (Total Marks 30)

Deadline

Your Assignment must be uploaded/ submitted before or on

23:59 October 20, 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 strengthen the students’ BASIC concepts regarding data.
• How to recognize and differentiate among different types of data in real life examples.
• Hands on arranging and displaying already collected data into an organized form, using given statistical method.

Assignment.1 (Lessons 1-8)

Question 1: (Marks: 4+6=10

a) Define descriptive and inferential statistics.

b) Name the appropriate method of collecting primary data in each of the following.

I. Filling in form of marriage (Nikkah Nama).

II. Women getting information from house to house regarding surf washing powder.

III. Unilever, on T.V. advertisement is asking viewers to send their answers to the question through post to the given PO Box address.

IV. Village patwari making estimates of crops.

V. Filling in data in a form sent by Education department to colleges.

VI. Providing information to the inquiry form of population census.

Question 2: Marks: 3+7=10

a) Why we use Stem and leaf plot in data sorting?

b) Compute Mean and P₇₄ (74^th percentile) from the following data.

Classes	Frequency
0.7312 – 0.7313	10
0.7314 – 0.7315	15
0.7316 – 0.7317	20
0.7318 – 0.7319	25
0.7320 – 0.7321	30
0.7322 – 0.7323	8
0.7324 – 0.7325	2

Question 3: Marks: =10

Calculate median, lower quartile and upper quartile from the following distribution.

Height	Number (f)
57.5-60.0	6
60.0-62.5	26
62.5-65.0	190
65.0-67.5	281
67.5-70.0	412
70.0-72.5	127
72.5-75.0	38
Total	1080