ECAT Pre General Science MCQ Test With Answer for Statistics Full Book

MCQ's Test For ECAT Pre General Science Statistics Online Test

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ECAT Pre General Science Statistics Online Test

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Question # 1

Which of the following is/are unbiased estimators

Question # 2

Data are classified according to one characteristic, called

Question # 3

The sum of deviations of the value from the mean is always

Question # 4

A time series of annual data can contain which of the following components

Question # 5

The measures of dispersion are changed by a change of

Question # 6

Recording the time (minutes) taken by the customers to wait for its turns in a utility store while standing in a queue, is an example of

Question # 7

The point in time at which the selected number was measured is referred to as the

Question # 8

If any value in the data set is zero, then it is not possible to compute

Question # 9

Simple bar chart is represented by

Question # 10

A specific value of an estimator computed from the sample data after the sample has been observed is called

Question # 11

Indices that involve a group of commodities are referred to as

Question # 12

Population parameters are estimated from

Question # 13

The number of pulses generated is one second is called _______

Question # 14

A null hypothesis is always one of status quo or

Question # 15

The data which have not undergone any statistical treatment are ________ data

Question # 16

A sample statistic that is used to estimate the unknown true value of a population parameter is called

Question # 17

Which one of the following is an example of seasonal variation

Question # 18

Primary data and ungrouped data are

Question # 19

When each outcome of a sample space is as likely to occur as any other, the outcomes are called

Question # 20

If all items are given equal weight, the index number is called

Question # 21

The collecting of information from a part of the population is called making a

Question # 22

Statistical laws are true

Question # 23

A fire in a factory delaying production for 3 weeks is an example of

Question # 24

The probability density function of a continuous random variable Y is specified by a

Question # 25

__________ is always greater than or equal to zero

Question # 26

Selecting a representative sample from a given population called

Question # 27

If any value is zero, then it is impossible to calculate

Question # 28

The probability distribution of a discrete random variable can be described with the help of a two

Question # 29

The variance of a constant is

Question # 30

In tabulation, row captions are also called

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ECAT Statistics Chapter 1 Important MCQ's

Sr.# Question Answer
1 In data of birth's and death'd and epidemics as a result of advancement in medical sciences, the secular trend is usually
A. a downward tendency
B. zero tendency
C. an upward tendency
D. None of these
2 If x and y are independent variables, then two lines of regression are
A. x= 0, y = 0
B. x = 0, y = const
C. x = const, y = 0
D. x= const, y = const
3 A fire in a factory delaying production for 3 weeks is an example of
A. Seasonal variation
B. Secular Trend
C. Cyclical fluctuations
D. Irregular Movements
4 A combination of characters, numbers and symbols for specific purpose is called
A. Bytes
B. Data
C. MB
D. None of these
5 When a pair of dice is rolled, the sample space consists of
A. 6 outcomes
B. 36 outcomes
C. 12 outcomes
D. 24 outcomes
6 A discrete variable is also known as
A. Continuous
B. Discontinuous
C. Random Variable
D. Deviation
7 The most common measures of absolute variability are also called
A. Range
B. Measures of spread
C. Relative measures
D. Mean deviation
8 Link relatives are not directly comparable because they have
A. Fixed base
B. Not fixed base
C. Zero values
D. None of these
9 The CPU of a digital computer consists of
A. ALU
B. Main memory
C. Control unit
D. All of the above
10 If the critical region is located equally in both tails of the sampling distribution of test statistic, the test is called a
A. Two tailed test
B. One tailed test
C. Right tailed test
D. Left tailed test

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