Question # 1

The mean of the absolute deviations between the values and their median is called

Choose an answer

Population

Standard deviation

Range

Mean deviation

A sample is a part of

Choose an answer

Universe

Mean

Median

Mode

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

Computer memory

Choose an answer

Performs all calculations

Receives input data

is extremely limited

is better than human memory

A ___________ is a line or curve that shows the general tendency of a time series.

Choose an answer

Historigram

Seasonal variation

Secular Trend

None of these

If a set contains a specific number of elements then it is called

Choose an answer

Finite set

Infinite set

Universal set

Disjoint set

First-hand collected data is called

Choose an answer

primary data

secondary data

grouped data

ungrouped data

The null hypothesis (H_o) is the hypothesis that is always

Choose an answer

rejected

accepted

zero

tested

G.M becomes zero if any of the observation is

Choose an answer

zero

1

similar

Opposite

The sum of probabilities of a discrete random variable is always

Choose an answer

0

1

Infinity

None of these

The number of tally count for each value is its

Choose an answer

Range

Frequency

Class boundaries

Class mark

The statistical estimation of population is divided into

Choose an answer

two types

Three types

cannot divided

None of these

The frequency of classes of the highest order are called

Choose an answer

Consistence of frequencies

Ultimate class frequencies

Independence of attributes

None of these

A value calculated from sample is called

Choose an answer

Parameter

Variable

Constant

Statistic

If the two regression coefficients are 0.8 and 0.2, then coefficient of correlation r is

Choose an answer

0.4

-0.4

1.6

None of these

A symmetrical distribution has mean equal to 4. Its mode will be

Choose an answer

Less than 4

Equal to 4

Greater than 4

None of these

The number of pulses generated is one second is called _______

Choose an answer

Accuracy

Frequency

Hertz

Data

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

Choose an answer

H.M

A.M

Median

Mode

If r = 1 or -1, the regression lines are

Choose an answer

Parallel

Inclined at the angle <

Perpendicular

None of these

The part of the table containing row captions is called

Choose an answer

Stub

Row captions

Box-head

Row-head

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

Choose an answer

Variables

Surveys

Ratio

Parameters

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

Choose an answer

Mean deviation

Quartile deviation

Standard deviation

Range

A sample is a representative part of a

Choose an answer

Continuous

Discrete

Population

Parameter

If A denote that the object possesses the attribute A, thenα, means

Choose an answer

β

Notβ

Notα

Not A

The main function of a computer is

Choose an answer

Data storage

Speed

Data Processing

None of these

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

Choose an answer

Discrete variable

Continuous variable

Constant

Parameter

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

Choose an answer

Infinite population

Finite population

Option A & B

None of these

A well defined collection of distinct objects is called

Choose an answer

Probability

Chance

Element

A set

Selecting a representative sample from a given population called

Choose an answer

Finite population

Sampling

Infinite population

None of these

If P(B) = 0, then the conditional probability is

Choose an answer

zero

1

undefined

-1

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

Choose an answer

0.15

0.90

0.85

0.95

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