ECAT Pre General Science Statistics Online Test

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  • Chapter NameCh 1

ECAT Pre General Science Statistics Online Test

  • Total Questions30

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ECAT Pre General Science Statistics Online Test

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Question # 1

The number used to describe classes in a frequency distribution are called

Question # 2

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 # 3

Graph of time series is called

Question # 4

The probability distribution of a discrete random variable is usually written with the help of a function, called its

Question # 5

For a particular test, alpha = 0.05 and beta = 0.10. The power of this test is

Question # 6

_______ is a quantity computed from a population when the entire population is available.

Question # 7

The hypergeometric model is applied when samples are taken or selections are made, from a finite population

Question # 8

A combination of characters, numbers and symbols for specific purpose is called

Question # 9

Mean deviation is always

Question # 10

The heights of all the students enrolled at a college in a given year, is an example of

Question # 11

The part of the table containing row captions is called

Question # 12

The results obtained by rolling a die, is an example of

Question # 13

The probability of a type 1 error is

Question # 14

In normal probability distribution, all odd order moments about mean are

Question # 15

Lack of symmetry is called

Question # 16

Simple bar chart is represented by

Question # 17

The _______ is an irregular component of variation in a time series

Question # 18

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

Question # 19

The attributes denoted by A, B, ................ are called

Question # 20

A sample is a representative part of a

Question # 21

The index numbers are calculated in

Question # 22

The sum of probabilities of events of a sample space is always

Question # 23

Exponential smoothing requires

Question # 24

Binomial distribution has two

Question # 25

Which one of the following is an example of seasonal variation

Question # 26

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

Question # 27

In continuous distribution, P(y=a) and P(y= b) is always

Question # 28

In chain base method, the base period is

Question # 29

Number of instructions processed in one second is called ________ of computer

Question # 30

The statement of the alternative hypothesis never contains a(n) ________ sign regarding the specified value of the parameter

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