NAT-IGS General Science Statistics Hard Test

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

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NAT-IGS General Science Statistics Hard Test

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Question # 1

Var (2x + 3) is:

Question # 2

Sum of deviation from Mean is always

Question # 3

How many types of dispersion

Question # 4

If var (x) =5, var(y) =10, then var (2x + y) is:

Question # 5

A graph of time series is called

Question # 6

If 1- a = 0.90, then value of Za-2 is

Question # 7

Movement in secular trend

Question # 8

A decimal number system has base

Question # 9

Normal distribution is

Question # 10

A graph of a cumulative frequency distribution is called:

Question # 11

For a symmetrical distribution:

Question # 12

In binomial distribution trails are:

Question # 13

The correlation coefficient would be

Question # 14

If any value in the series is zero then it is impossible to calculate

Question # 15

Probability distribution of a statistic is called

Question # 16

In symmetrical distribution the values of mean median and mode

Question # 17

Link relatives can be obtained by dividing Pn by:

Question # 18

If E (X) = 1.6 and E (Y) = 0.4, then E (X - Y) =--------------

Question # 19

If all the values are of equal importance then index numbers are called:

Question # 20

In which sense Statistics means numerical data:

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NAT-I Statistics Chapter 1 Important MCQ's

Sr.# Question Answer
1 If two regression coefficients are 0.8 and 0.2 then correlation coefficient is
A. 0.16
B. -0.16
C. 0.40
D. -0.40
2 In binomial experiment each trail has:
A. One outcome
B. Two outcome
C. Three outcome
D. Four outcome
3 A numerical value computed from sample is called:
A. Parameter
B. Sampling unit
C. Sampling design
D. Statistic
4 The regression coefficient of x on y is:
A. Cov (x,y) / Var (x)
B. Cov (x,y) / Var (y)
C. Cov (x,y) / S.D (x)
D. Cov (x,y) / S.D (y)
5 By decreasing ×̅ the length of confidence interval for m
A. Increases
B. Decreases
C. No effect
D. None of these
6 If for a contingency table d.f = 12 and the no of rows = 4 then the no of columns will be
A. 5
B. 4
C. 3
D. 2
7 In a straight line equation y = a + bx b is the
A. y intercept
B. Slope
C. x intercept
D. Trend
8 If any value in the series is zero then it is impossible to calculate
A. Mean
B. Geometric mean
C. Mode
D. None of these
9 Which of the following cannot be null hypothesis:
A. qΣ q
B. q3 q
C. q = q
D. q1 q
10 An estimator is........ if its expected value is equal to the population parameter to be estmated
A. Bad
B. Based
C. Unbiased
D. None of these

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