**Question. What is the probability of getting exactly two tails in a single throw of 3 coins?**

(a) 1/8

(b) 2/8

(c) 3/8

(d) 2/6

## Answer

C

**Question. The relationship between correlation coefficient and coefficient of determination is that**

(a) Both are unrelated

(b) Coefficient of correlation is the square root of the coefficient of determination

(c) The coefficient of determination is the square root of the coefficient of correlation

(d) The coefficient of determination is the coefficient of correlation squared

## Answer

B

**Question. Which of the following values could not represent a correlation coefficient?**

(a) r = 0.99

(b) r = 0.02

(c) r = -0.73

(d) r = 1.09

## Answer

D

**Question. If the value of correlation coefficient between X and Y is ‘0’ then**

(a) Positive correlation between X and Y

(b) Negative correlation between X and Y

(c) Absence of Correlation between X and Y

(d) Perfectly positive correlation between X and Y

## Answer

C

**Question. In simple linear regression, the numbers of unknown constants are:**

(a) two

(b) three

(c) four

(d) five

## Answer

A

**Question. If two variables, x and y, have a very strong linear relationship, then**

(a) there is evidence that x causes a change in y

(b) there is evidence that y causes a change in x

(c) there might not be any causal relationship between x and y

(d) None of the above

## Answer

C

**Question. The value we would predict for the dependent variable when the independent variables are all equal to zero is called:**

(a) Slope

(b) Sum of residual

(c) Intercept

(d) Origin

## Answer

C

**Question. Which of the following equation is used to describe linear relationship**

(a) y = a + bx^{2}

(b) y = ax^{2} + b

(c) y = ax^{3} + b

(d) y = a + bx

## Answer

D

**Question. If the Pearson correlation co-efficient R is equal to 1, then:**

(a) there is a positive relationship between the two variables.

(b) there is a negative relationship between the two variables.

(c) There is a perfect positive relationship between the two variables.

(d) there is no relationship between the two variables.

## Answer

C

**Question. The study of the relationship between one variables and the combined effect of all other variables is called**

(a) Multiple correlation

(b) Total correlation

(c) Partial correlation

(d) Simple correlation

## Answer

A

**Question. The geometric mean of the two regression coefficient β _{yx} and β_{xy} is equal to:**

(a) r

(b) r

^{2}

(c) 1

(d) 2

## Answer

A

**Question. The estimate of β in the regression equation Y=α+βx+e by the method of least square is:**

(a) Biased

(b) Unbiased

(c) Consistent

(d) Constant

## Answer

B

**Question. The independent variable in a regression is also called:**

(a) Regressor

(b) Regressand

(c) Predictand

(d) Determinat

## Answer

A

**Question. In the regression equation Y=a+bX, the Y is called:**

(a) Independent variable

(b) Dependent variable

(c) Continuous variable

(d) Constant variable

## Answer

B

**Question. Regression coefficient is independent of**

(a) Value

(b) Scale

(c) Both Origin and Scale

(d) Origin

## Answer

A

**Question. Regression analysis:**

(a) Measures the demand for goods

(b) Measures growth

(c) Established the relationship between two variables

(d) Estimate the value of variables

## Answer

C

**Question. In the regression equation Y = 21 – 3x, the slope is**

(a) 21

(b) 3

(c) -3

(d) 18

## Answer

C

**Question. The straight line graph of the linear equation Y=a+bX will slope downward if:**

(a) b > 0

(b) b<0

(c) b = 0

(d) b = 1

## Answer

D

**Question. If Y= 2 – 0.2X, then the value of Y intercept is equal to:**

(a) -0.2

(b) 2

(c) 0.2X

(d) 1.08

## Answer

B

**Question. The coefficient of determination must be**

(a) between -1 and +1

(b) between -1 and 0

(c) between 0 and 1

(d) Between 1 and 2

## Answer

C

**Question. A process by which we estimate the value of dependent variable on the basis of one or more independent variables is called:**

(a) Correlation

(b) Regression

(c) Residual

(d) Deviation

## Answer

B

**Question. Poisson distribution has only one parameter which is the**

(a) Mean

(b) Variance

(c) Standard variation

(d) Mode

## Answer

B

**Question. The probability of r success in n trials given by P(X=r) = ^{n}C_{r}p^{r} q^{n-r} ,is the general form of**

(a) Normal distribution

(b) Poisson distribution

(c) Binomial distribution

(d) None of the above

## Answer

C

**Question. An orderly set of data arranged in accordance with their time of occurrence is called:**

(a) Arithmetic series

(b) Geometric series

(c) Time series

(d) Random series

## Answer

C

**Question. The graph of time series is called:**

(a) Polygon

(b) Frequency curve

(c) Ogive

(d) Histogram

## Answer

D

**Question. Laspeyres’ index number may be said to give**

(a) Upper limit to the price change

(b) Lower limit to the price change

(c) Demand limit to the price change

(d) Supply limit to the price change

## Answer

A

**Question. P _{0} indicates**

(a) Price of the current year

(b) Price of the base year

(c) Price of the last year

(d) Price of previous year

## Answer

B

**Question. Index for base period is always taken as:**

(a) One

(b) 100

(c) Zero

(d) 1000

## Answer

B

**Question. Fisher’s index number is the**

(a) Arithmetic mean of Paasche’s index number and Laspeyres’ index number

(b) Harmonic mean of Paasche’s index number and Laspeyres’ index number

(c) Average mean of Paasche’s index number and Laspeyres’ index number

(d) Geometric mean of Paasche’s index number and Laspeyres’ index number

## Answer

D

**Question. Which of the following is not a measurement of trend?**

(a) Graphic method

(b) Method of moving averages

(c) Method of composite straight lines

(d) Method of semi-averages

## Answer

C

**Question. The crude birth rate reveals the proportion by which the population is increased through**

(a) the addition of new members

(b) the subtraction of new members

(c) the high standards of infant welfare

(d) the high standards of maternal welfare

## Answer

A

**Question. The crude birth rate usually lies between**

(a) 5 and 20 per 1,000

(b) 10 and 55 per 1,000

(c) 15 and 60 per 1,000

(d) 20 and 75 per 1,000

## Answer

B

**Question. The death rate used for comparing the mortality situations of two or more places is**

(a) Crude death rate

(b) Specific death rate

(c) Projected death rate

(d) Standardised death rate

## Answer

D

**Question. A population with constant size and age composition or constant age and sex composition over time is called**

(a) stable population

(b) stationary population

(c) standardised population

(d) life table population

## Answer

B

**Question. Which of the following is also known as ‘biometer of population’?**

(a) Life table

(b) Total fertility rate

(c) Force of Morbidity

(d) Net reproduction rate

## Answer

A

**Question. The most appropriate average in averaging the price relatives is:**

(a) Harmonic mean

(b) Arithmetic mean

(c) Geometric mean

(d) Median

## Answer

C

**Question. Base period for an index number should be a**

(a) Normal period

(b) Year only

(c) Period at distant past

(d) Next year

## Answer

A

**Question. Index numbers are expressed in:**

(a) Ratios

(b) Squares

(c) Percentages

(d) Margin

## Answer

C

**Question. What type of index number can help the government to formulate its price policies and to take appropriate economic measures to control prices?**

(a) Wholesale Price Index

(b) Consumer’s Price Index

(c) Volume Index Number

(d) Composite index

## Answer

B

**Question. In a multiplicative model the seasonal effects are expressed as**

(a) Percentage or Ratio

(b) Percentage or Square root

(c) Square root or Ratio

(d) Ratio or Variation

## Answer

A

**Question. Which show the changes in the general price level of the country?**

(a) Retail price index numbers

(b) Wholesale price index numbers

(c) Agricultural price index

(d) Industrial price index

## Answer

B

**Question. Fisher’s ideal index number is the geometric mean of the:**

(a) Laspeyre’s and Marshall Edgeworth indices

(b) Laspeyre’s and Paasche’s indices

(c) Paasche’s and Marshal Edgeworth indices

(d) Square root of Laspeyre’s

## Answer

B

**Question. Moving average method is used for measurement of trend when:**

(a) Trend is linear

(b) Trend is non linear

(c) Trend is curvilinear

(d) Trend is irregular

## Answer

A

**Question. The parameters involved in binomial distribution is/are**

(a) n

(b) p and q

(c) n, p and q

(d) n and p

## Answer

D

**Question. If ‘m’ is the mean of a Poisson distribution, the variance is given by**

(a) m^{2}

(b) m

(c) √m

(d) m/2

## Answer

C

**Question. For a normal curve, the QD, MD and SD are in the ratio**

(a) 1:2:3

(b) 5:6:7

(c) 9:10:11

(d) 10:12:15

## Answer

B

**Question. In a binomial distribution, if p=q, then P(X=r) is given by**

(a) ^{n}C_{r}(0.5)^{n}

(b) ^{n}C_{n}(0.5)^{n}

(c) ^{n}C_{r}(0.5)^{r}

(d) ^{n}C_{n}(0.5)^{r}

## Answer

A

**Question. In a binomial distribution, if ‘n’ is the number of trials and ‘p’ is the probability of success, then the mean value is given by**

(a) n

(b) √np

(c) np

(d) npq

## Answer

C

**Question. Under normal curve, the area enclosed by ‘ mean ± 2σ ’ is**

(a) 68.26%

(b) 95.44%

(c) 99.73%

(d) 100%

## Answer

D

**Question. Poisson distribution with regard to peakedness is**

(a) Platykurtic

(b) Mesokurtic

(c) Leptokurtic

(d) Depends on value of its parameter

## Answer

C

**Question. If a ball is drawn at random from a bag containing 4 white, 7 green and 10 black balls, what is the probability that it is a green ball?**

(a) 7/21

(b) 4/21

(c) 7/7

(d) 1/21

## Answer

A

**Question. The probability of the simultaneous occurrence of two events A and B is**

(a) P(A) + P(B)

(b) P(A) + P(B) – P(A∩B)

(c) P(A) – P(B)

(d) P(A) P(B/A), P(A) ≠0

## Answer

A

**Question. The outcomes of tossing a coin five times are a variable of the type**

(a) Continuous random variable

(b) Discrete random variable

(c) Neither discrete nor continuous random variable

(d) Discrete as well as continuous random variable

## Answer

B

**Question. The value of constant ‘e’ appearing in normal distribution is**

(a) 3.1416

(b) 2.1783

(c) 2.7183

(d) 2.8317

## Answer

C

**Question. The shape of the normal curve is**

(a) Bell shaped

(b) Flat

(c) Circular

(d) Spiked

## Answer

A

**Question. In probability theories, events which can never occur together are called**

(a) Dependent events

(b) Independent events

(c) Mutually exclusive events

(d) Non-mutually exclusive events

## Answer

C

**Question. If the happening of an event is not affected by the happening of other events, it is said to be**

(a) A dependent events

(b) An independent events

(c) Mutually exclusive events

(d) Exhaustive cases

## Answer

B

**Question. Individual respondents, focus groups, and panels of respondents are categorized as**

(a) Primary data sources

(b) Secondary data sources

(c) Itemized data sources

(d) Pointed data sources

## Answer

B

**Question. A _____ is a numerical characteristic of a sample and a _____ is a numerical characteristic of a population.**

(a) Sample, population

(b) Population, sample

(c) Statistic, parameter

(d) Parameter, statistic

## Answer

C

**Question. A graph that uses vertical bars to represent data is called a_____-**

(a) Line graph

(b) Bar graph

(c) Scatter-plot

(d) Vertical graph

## Answer

B

**FILL IN THE BLANKS**

**Question. The regression equation Y= a + bx, pass through the origin and b= 0.5 then the regression equation will be written as _____________.**

## Answer

Y=0.5x

**Question. The value of the coefficient of correlation r lies between _____________.**

## Answer

-1 and +1

**Question. The square of the correlation coefficient is called the _____________.**

## Answer

Coefficient of determination

**Question. When regression line passes through the origin, then intercept is _____________**

## Answer

zero

**Question. In time reversal test the product of the index number by another index number based on the same data with time interchange equal to _____________.**

## Answer

One

**Question. The variation which occurs regularly and periodically within a period of less than one year is _____________.**

## Answer

Seasonal variation

**Question. The crude birth rate shows the rate at which the population ________ through births.**

## Answer

increases

**Question. The gross reproduction rate is used as a measure of the ________ in a population.**

## Answer

fertility

**Question. Vital statistics is the science of ________ applied to the life history of communities and nations.**

## Answer

numbers

**Question. An old population can exhibit a relatively ________ crude death rate even if longevity is high.**

## Answer

high

**Question. The risk of dying from puerperal causes is measured by the ________ mortality rate.**

## Answer

maternal

**Question. Death rate are made specific only with respect to ________ and sex.**

## Answer

age

**Question. Data on births and deaths can be obtained from the ________ record.**

## Answer

hospital

**Question. It is only a ________ birth that signifies an addition to the existing population.**

## Answer

live

**Question. The infant mortality rate has been called the most ________ of all measures of mortality.**

## Answer

sensitive

**Question. Vital statistics have to do with ________ rather than things.**

## Answer

people

**Question. ________ deals with mankind in the aggregate.**

## Answer

Vital statistics

**Question. In time series ananlysis, if the period of cycle is not fixed because of fluctuations, the trend will be a _____________.**

## Answer

Curve

**Question. A simple average of price relative is an index obtained by taking the average of the price relatives of all the items in the series. The average normally used is the _____________**

## Answer

Arithmetic mean

**Question. In a certain data if Lasperye’s Index Number is 20 and Paasche’s Index Number is 5, then Fisher’s Ideal Index number will be _____________**

## Answer

10

**Question. Price relative is usually calculated as a percentage of the price of a commodity in any year as compared with the _____________ price.**

## Answer

Base year

**Question. In analysis of a sample data it was found that , Paasche’s and Laspeyre’s index numbers are 5 and 8 respectively, then Fisher’s index number will be _____________**

## Answer

6.32

**Question. In regression equation Y = a + bx, Y is dependent variable and x is _____________**

## Answer

Independent variable

**Question. Simple linear regression involves a relationship between _____________ Only.**

## Answer

Two variables

**Question. If the two series are ranked according to two attributes, the correlation coefficient between their ranks is called the _____________.**

## Answer

Rank corellation

**Question. The correlation between two variables eliminating the linear effect of other variables in them is called _____________.**

## Answer

Partial correlation

**Question. To obtain the line of best fit, we use the method of _____________.**

## Answer

Least square

**Question. If correlation coefficient (r) equal to +1 it shows a _____________.**

## Answer

perfect positive correlation

**Question. Under simple correlation the relationship is confined to _____________ variables only.**

## Answer

two

**Question. If ∑p _{1}q_{0} = 42 and ∑p_{0}q_{0} = 20 then Laspeyre’s Index Number is _____________.**

## Answer

210