NAT-IGS General Science Statistics Easy Test

MCQ's Test For NAT-IGS General Science Statistics Easy Test

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NAT-IGS General Science Statistics Easy Test

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Question # 1

If x - 0,1,2,P(x) = k,2k,3k then k is

Question # 2

Sum of the random errors is equal to:

Question # 3

Sum of dots when two dice are rolled is:

Question # 4

If 'c' is a non-random variable then E(c) is:

Question # 5

The parameters of hypergeometric distribution are:

Question # 6

If byx < 0 and bxy < 0 then "r"

Question # 7

A binomial random variable can only assume the values

Question # 8

If a and b are two constants then var (a+ bx) =

Question # 9

If two regression coefficients are 0.8 and 0.2 then correlation coefficient is

Question # 10

Which index number may be weighted?

Question # 11

The probability of drawing one green ball from a bag containing 6 red,8 black 10 yellow and one green ball is

Question # 12

The alternative hypothesis always contains the sign of

Question # 13

When the values are not of equal importance then we compute

Question # 14

The average value of the lower and upper limits of a class is called:

Question # 15

The standard deviation of any sampling distn is called

Question # 16

The graph of time series is called:

Question # 17

Mean deviation is least when deviations are taken from:

Question # 18

A decimal number system has base

Question # 19

The probability of an impossible event is equal to:

Question # 20

In a normal distribution S2 = 5 them m4 is

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NAT-I Statistics Chapter 1 Important MCQ's

Sr.# Question Answer
1 Weight of earth is:
A. Discrete Variable
B. Continuous Variable
C. Qualitative variable
D. Difficult to tell)
2 If 'c' is a non-random variable then E(c) is:
A. Zero
B. C
C. Two
D. None of these
3 In constructing a Histogram if the class interval size of one class is double than others then freq of that class should be:
A. Doubled
B. Half
C. Quarter
D. One
4 Variance is always calculated from:
A. Mean
B. Median
C. Geometric mean
D. Mode
5 In chain base method,the base period is:
A. Fixed
B. Changed
C. Constant
D. None of these
6 The harmonic mean of two numbers a and b is:
A. 2ab/ a+ b
B. 2 /  a +b
C. ab / a + b
D. a + b/ ab
7 The shape of the normal distribution is:
A. Leptokurtic
B. Mesokurtic
C. Platykurtic
D. Skewed
8 The first moment about origin is equal to:
A. Variance
B. Mode
C. Mean
D. Standard deviation
9 Rejecting Ho if Ho is true is
A. No error
B. Type-I error
C. Type-II error
D. Standard error
10 If right tail is longer than the left tail,then distribution is called:
A. Negatively skewed
B. Positively skewed
C. Symmetrical
D. None of these

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