Question # 1

The two regression lines are perpendicular to each other if

Choose an answer

r = 1

r = 0

r = -1

None of these

Which of the following would likely be a seasonal component of a time series

Choose an answer

Holidays

Population growth

Law suits

None of these

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

Choose an answer

equal

greater than

less than

None of these

The probability of a type 1 error is

Choose an answer

Alpha

beta

Power curve

None of these

An index number calculated for more than one items is called

Choose an answer

Composite

Simple

Relative

None of these

Most of the decisions that affect our daily lives are based upon

Choose an answer

Absolute certainty

Likelihood

Independent

None of these

Lack of symmetry is called

Choose an answer

Dispersion

Moment

Skewness

Kurtosis

In tabulation, column captions are also called

Choose an answer

Box-head

Body

Stub

None of these

The process of dividing the objects into two mutually exclusive classes is called

Choose an answer

Variable

Population

Dichotomy

Frequency distribution

In chain base year method, the _________ is fixed

Choose an answer

Year

Price

Quantity

Price and quantity

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

Choose an answer

Infinite population

Finite population

Discrete sampling

None of these

An estimator is always is

Choose an answer

Constant

Variable

Parameter

Statistic

The part of column captions is called

Choose an answer

Stub

Body of the column

Box-head

Prefatory

The probability distribution of a discrete random variable is usually called its probability

Choose an answer

Inverse function

Mass function

Density function

Frequency function

Sample mean is a

Choose an answer

Constant

Parameter

Variable

Statistic

A computer stores instructions in

Choose an answer

English language

Octal Number System

Binary Number System

Decimal Number System

The simplest form of the continuous distribution is the

Choose an answer

Discrete uniform distribution

Probability mass function

Density function

Continuous uniform distribution

_______ is the chance variation in an observation.

Choose an answer

Random error

Mean

Deviation

Discrete Varibale

If r between the lines of regressions of x and y and y on x, is +1, then

Choose an answer

Lines coincides

Lines are perpendicular

There is perfect correlation between x and y

A, B and C

The cyclical fluctuations are

Choose an answer

Long term oscillation

Short term oscillation

Secular oscillation

None of these

A sample is a representative part of a

Choose an answer

Continuous

Discrete

Population

Parameter

The measures of dispersion are changed by a change of

Choose an answer

Origin

Scale

Algebraic sign

None of these

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

Choose an answer

straight line

Rectangle

Smooth curve

Circle

A computer can execute

Choose an answer

a flow chart

a program

an algorithm

all of the above

Primary data and ungrouped data are

Choose an answer

Same

Opposite

Not same

Proportional

The positive square root of the variance is refered to as the

Choose an answer

Mean deviation

Quartile deviation

Standard deviation

Range

Computer memory

Choose an answer

Performs all calculations

Receives input data

is extremely limited

is better than human memory

A point estimate is a single number that is used to estimate an unknown

Choose an answer

Constant

Parameter

Variable

None of these

Relative measures have no

Choose an answer

Negative values

Decimal values

Units

Value

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

Choose an answer

Minimum

Maximum

One

zero

A population consists of unlimited number of elementary units

Choose an answer

Continuous population

Finite population

Infinite population

Mix population

More Classes

Other Links

ECAT Pre General Science Statistics Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer