Following data are given for marks in subject A and B in a certain examination :
SUBJECT A ( MEAN MARKS 36, STANDARD DEVIATION 11 )
SUBJECT B ( MEAN MARKS 85, STANDARD DEVIATION 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.
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Q.1>Following data are given for marks in subject A and B in a certain examination :
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.
Q2.> Construct 5- yearly moving averages from the following data
YEAR 2000 2001 2002 2003 2004 2005 200...
SALE 105 107 109 112 114 116 118 121 1...
Q 3.> In 120 throws of a single dice, following distribution of faces was observed.
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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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.
Q2.> Construct 5- yearly moving averages from the following data
YEAR 2000 2001 2002 2003 2004 2005 200...
SALE 105 107 109 112 114 116 118 121 1...
Q 3.> In 120 throws of a single dice, following distribution of faces was observed.
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.
plzzzzzzzz mark me as the best and
plzzzzz press thank you for me.
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