# Statistics MCQS for NTS Set 4

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If E (X) = 1.6 and E (Y) = 0.4, then E (X – Y) =————–
-0.2
1.2
2
None of these

In a Binomial prob.Distn it is impossible to find:
P (X = 0)
P (X < 0)
P(0? X ? n
P( X > 0)

The lowest value of variance is:
None of them
-2
1
0

In moving average method we can’t find trend values of some
Middle period
Starting periods
Starting and can periods
End periods

A random variable is of types:
4
3
1
2

If P(A) = 0.7,P(B) = 0.5,A and B are independent then P(A C B) =
1.2
0.35
None of these
0.85

The hypergeometric distribution has parameters:
2
None of these
3
4

A quantitative variable whose values are countable is called
None of these
Discrete variable
Categorical variable
Continuous variable

y = ax + b, then mode (y) = ———
a mode (x)
Mode (x) a
None of these
Mode (x) + b

The probability of drawing any one spade card is:
4/13
1/4
1/52
1/13

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