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# STA 301 ASSIGNMENT 01 FALL 2014 DUE DATE 02/12/2014

Question 1: (Marks: 5)

a)      Construct a frequency distribution table where the class interval is 12, the number of classes is 6 and the smallest observation is 49 (lowest class limit). Also build the column of the relative frequency. The data is given below:

74, 49, 103, 95, 90, 118, 52, 88, 101, 96, 72, 56, 64, 110, 97, 59, 62, 96, 82, 65, 85, 105, 116, 91, 83, 99, 52, 76, 84, 90.

Question 2: (Marks: 5)

a)      Compute the mean deviation from the mean for the following data.

(Where Mean = 3.949)

 X f 2.8 4 3.0 15 3.2 20 3.4 47 3.6 63 3.8 78 4.0 88 4.2 69 4.4 59 4.6 35 4.8 10 5.0 8 5.2 4 500

Question 3:                                                                                                        (Marks: 3+2=5)

a)      The ages of 22 football players are listed below:

66, 73, 68, 54, 25, 38, 67, 69, 74, 53, 52, 72, 55, 75, 37, 24, 13, 12, 11, 26, 39, 23

Make a stem and leaf display for the data.

b)      Which variable (Discrete or Continuous) is more suitable in the following examples?

• The content of a bottle of fluid is quoted as 1025 ml.
• People are asked to state their age at their birthday.
• People are asked to state how many times in the last month they visited their family doctor.
• The height of trees at a nursery.

Rules for Marking

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

• The Assignment submitted, via email, after the due date.
• The submitted Assignment is not found as an 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.
• An 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:
• Variable
• Frequency Distribution
• Stem and Leaf
• Measure of Dispersion

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### Replies to This Discussion

first of all arrange the data in ascending order.i.e.

49,52,52,56,59,62,64,65,72,74,76,82,83,84,85,88,90,90,91,95,96,96,97,99,101,103, 105,110, 116,118

Assignmnt no 2 mn x hamen dia hoa ha but f ki tu hamen zarorat ne hoti mean deviation mn. plzz clear my concept. i mean f ka kia karna ha?

again wrong...

you should not take sum of them..

here sum of f = 30..

make frequency dist.

class limits | f | Rf

these r the column

ayisha ic m just class limits ka colum aye ga ya class bundries ka b aye ga

i think bana phry ga q k ques main frequency distribution table ka kaha gya hi aur table main ye sub ate hi

nhi class limits aur class boundries ka column nhi ae ga

total 5 columns banen gy:

class limits

frequency

tally marks

relative frequency

% relative frequency

regards.....

to calculate mean deviation we have to use this formula:

M.D=Ʃǀdiǀ

n

please correct if i am wrong

regards.....

Kia hamein Cumulative frequency ka column banana hai?

no brother we don't need to make the column of cumulative frequency.

regards.....

yes

thanku dear i hope isi tarah sari assignment sahi se ho gye i m sharing our views tomorrow

M.D ka mera ans hai 0.3727 is it correct or not ????

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