Programme Code : BCA
Course Code : bcs-040
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Year : 2011 Views: 914 Submitted By : amit On 25th June, 2013

Do you have solution for this Question. If yes    I aslo want solution.

Q.


Q1 In a study on the cost living index for a particular year in a city, the following weekly observations were made.



Cost of living index(Rs.) 140-150 150-160 160-170 170-180 180-190 190-200



Number of Weeks 5 10 20 9 6 2



Draw a histogram and a frequency polygon on the same scale (10)







Q2 The following table gives the distribution of students and also regular players among them, according to age groups. Is there any correlation between ages and playing habits? (15)



Age of groups(Years) 15-16 16-17 17-18 18-19 19-20 20-21



Number of Students 200 270 340 360 400 300



Number of Regular players 150 152 170 180 180 120







Q3 Following data are given for marks in subject A and B in a certain examination : (15)



SUBJECT A SUBJECT B



MEAN MARKS 36 85



STANDARD DEVIATION 11 8



Coefficient of correlation between A and B = ±0.66 i) Determine the two equations of regression ii) Calculate the expected marks in A corresponding to 75 marks obtained in B.







Q4 A drilling machine bores holes with a mean deviation of 0.5230 cm and a standard deviation of 0.0032 cm. Calculate 2-sigma and 3-sigma upper and lower control limits for means of samples 4 and prepare a control chart. (15)







Q5. Construct 5- yearly moving averages from the following data (10)



YEAR 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012



SALE 105 107 109 112 114 116 118 121 123 124 125 127 129







Q6 In 120 throws of a single dice, following distribution of faces was observed. (15)



FACES 1 2 3 4 5 6 TOTAL



F0 30 25 18 10 22 15 120



From the given data, verify that the hypothesis “dice is biased” is acceptable or not.


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