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STA301 Statistics and Probability Assignment No 1 Solution & Discussion Due Date:07-11-2012

Assignment No: 1 (Lessons 1-9)

Question 1:                                                                                                                   Marks: 5+2=7

a)   Following are the heights (in centimeters) of 45 female high school students. Prepare a frequency distribution of the data where the class width is 5, the number of classes is 6 and the smallest observation is 148. Also obtain the relative frequency and relative cumulative frequency.

170, 151, 154, 160, 158, 154, 171, 156, 160, 157, 160, 157, 148, 165, 158, 159, 155, 151, 152, 161, 156, 164, 156, 163, 174, 153, 170, 149, 166, 154, 166, 160, 160, 161, 154, 163, 164, 160, 148, 162, 167, 165, 158, 158, 176.

b)     Which level of measurement (scale of measurement) is suitable for the following data in each example?

i) The lake Saif-ul-Muluk is 10,578 feet above from the sea level.

ii) If customers go to the shop for buying shoes and try different size of shoes. The sizes of shoes are 7B, 10D and 12E.

iii) The numbering on T-shirts of players in the cricket team.

iv) The weight of the person is 68 kg.

Question 2:                                                                                                                   Marks: 5+3=8

a)      Find the median, harmonic mean and 23rd percentile for the following frequency distribution.

 Class Boundaries Frequency 145 – 150 4 150 – 155 6 155 – 160 28 160 – 165 58 165 – 170 64 170 – 175 30

b)     Explain the concept of Geometric mean? Also find the geometric mean for the following data.

18, 19, 19, 19, 19, 20, 20, 20, 20, 20, 21, 21, 21, 21, 22, 23, 24, 27, 30, 36

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Replies to This Discussion

o teri khair

hmm not too difficult.......!

1st question k part b ma kiya krna ha?

us ma just batna n k us merument k liya kon sa scle b best ha like ARTHUMATIC MEAN ya Hermonic mean

ok thnx

send me 1ST plzzzzzz

Lecture 1 ,page 9 per mesurement scale hain ,un k name likne hain which is suitable.

sb ki

just ap reh gaen hain hareeza

Ayee! kiu thak raee hoo ...... Assign ban jaye gey :D

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