11-01-2012, 08:29 PM
STA301 Statistics and Probability Assignment No. 01 Fall Semester 1st November 2012
Dear Students
This is to inform that STA301 Statistics and Probability Assignment No. 01 Semester Fall 2012 has opened on Nov 2, 2012 12:00 AM and end date of submitting assignment is Nov 07, 2012 11:59 PM.
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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