Question # 1

The least squares estimates are unbiased estimates of the

Choose an answer

statistic

time series

parameters

variance

The method of least square gives too much weight to extremely large deviations from the

Choose an answer

population

parameter

sample

trend

The sum of deviations=Σ(y-ŷ) =

Choose an answer

0

1

10

-1

In a straight line equation Y = a + bX; a is the:

Choose an answer

X - intercept

Slope

Y- intercept

None of them

The secular trend is measured by the method of semi-averages when:

Choose an answer

Time series contains yearly value

Trend is linear

Time series contains odd number of values

None of them

For a least squares linear trend=ŷ= a + b x,

Choose an answer

Σy <Σŷ

Σŷ = 0

Σy =Σŷ

none of these

The additive model of the time series is:

Choose an answer

Y = T + S + C + I

TSCI

Y = a + bX

Y = a + bX + cX²

The straight line is fitted to a time series when the movements in the time series are

Choose an answer

linear

quadratic

cubic

constant

For a least squares line trend Y = a + bx, the b is the:

Choose an answer

Intercept

Slope

Variable

Trend

The rise and fall of a time series periods longer than one- year is called.

Choose an answer

Secular trend

Seasonal variation

Cyclical variation

Irregular variation

Methods of semi-averages gives an

Choose an answer

accurate result

objective result

authentic result

none of these

Which one is a rough and crude method for measuring secular trend ?

Choose an answer

free hand curve method

semi average method

moving averages method

least square method

For a least squares linear trend ŷ = a + bx, the Σ(y-ŷ)² = 0 when

Choose an answer

all the y-values lie on the line

all the y-values are positive

all the y-+values lie above the line

none of these

The basic components of a time series are:

Choose an answer

2

3

4

5

For a least squares linear trend=ŷ = a + bx, b is the

Choose an answer

variable

intercept

trend

slope

The graph of time series is called:

Choose an answer

Histogram

Historigram

Straight line

Ogive

The elimination or addition of a few more time periods may change its

Choose an answer

speed

value

direction

none of these

The graph of a time series is called

Choose an answer

histogram

polygon

straight line

historigram

More Classes

Other Links

Statistics Ics Part 2 Chapter 7 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