1
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
In an experiment with 15 observations on $$x$$, then following results were available:
$$\sum {{x^2}} = 2830$$, $$\sum x = 170$$
One observation that was 20 was found to be wrong and was replaced by the correct value 30. Then the corrected variance is :
A
188.66
B
177.33
C
8.33
D
78.00
2
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
The median of a set of 9 distinct observations is 20.5. If each of the largest 4 observations of the set is increased by 2, then the median of the new set :
A
is increased by 2
B
is decreased by 2
C
is two times the original median
D
remains the same as that of the original set
3
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
Dimensions of $${1 \over {{\mu _0}{\varepsilon _0}}}$$, where symbols have their usual meaning, are
A
[ L-1T ]
B
[ L-2T2 ]
C
[ L2T-2 ]
D
[ LT-1 ]
4
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
The physical quantities not having same dimensions are
A
torque and work
B
momentum and Planck's constant
C
stress and Young's modulus
D
speed and $${\left( {{\mu _0}{\varepsilon _0}} \right)^{ - 1/2}}$$
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