A Class MTH302 MCQ's Solved by Rana Umair A Khan

is the mean of inverse values.

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Harmonic mean

Geometric mean

Arithmetic mean

Midhing

In EXCEL use the …………….function to calculate correlation

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COREL

CORREL

CORRELE

CORRELATION

A line graph shows ……… plotted on a graph.

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Points

Picturs

Lines

Sectors

The middle value of an ordered array of numbers is the

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mean

median

mode

midpoint

The coefficient of variation for a set of annual incomes is 18%; the coefficient of variation for the length of service with the company is 29%. What does this indicate?

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More dispersion in the distribution of the incomes compared with the dispersion of their length of service

More dispersion in the lengths of service compared with income

Dispersion in the two distributions (income and service) cannot be compared using percents

Dispersions are equal

How many types of data classification are there?

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1

2

3

none of these

If the regression equation is equal to 23.6 - 54.2X, then 23.6 is the _________ while -54.2 is the ________ of the regression line

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slope, intercept

intercept, slope

slope, regression coefficient

radius, intercept

Measures of dispersion indicate the

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average score.

extent to which scores differ from one another.

relationships between variables.

central tendency of scores.

-------------- measures the strength of the linear relationship between the dependent and the independent variable.

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Simple correlation coefficient

Distance value

Y intercept

Normal plot

A worker out of 500 gets a prize by lottery. What is the chance of any one individual say Zain being selected?

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1/500

500/500

1/600

-1/500

Standard deviation can be calculated by taking deviation from any measure of central tendency

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True

False

The frequency of the required class can be obtained from the cumulative frequency

Select correct option:

a) by subtracting the cumulative frequency of the relative class from the next cumulative frequency

b) by subtracting the cumulative frequency of the relative class from the total frequency

c) by subtracting the cumulative frequency of the relative class from the previous cumulative frequency

None of these

Analysis of Variance (ANOVA) is a test for equality of:

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variances

means

proportions

only two parameters

The average of the first and third quartiles is called…

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Range

Midrange

Interquartile range

Midhinge

The method of least squares finds the best fit line that _______ the error between observed & estimated points on the line

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a) Maximizes

b) Minimizes

c) Reduces to zero

d) b & c

The sum of the deviations about the mean are always:

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the range

the standard deviation total

zero

positive

A data in which we study about provinces is called ……

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Qualitative

Quantitative

Geographical

Chronological

The following results were obtained from a simple regression analysis: y = 37.2895 - 1.2024 X r^2 = .6774 s = .2934 ____________ is the proportion of the variation explained by the simple linear regression model

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-1.2024

0.6774

37.2895

0.2934

Variance gives the average square of deviations from the

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Mean

Median

Mode

Standard deviation

Which of the following is correct

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Random = Actual - Expected

Random = Expected - Actual

Random = Actual +Expected

None of these

The ratio of the standard deviation of a distribution to the mean of that distribution is referred to as

Select correct option:

a probability distribution

the expected return

Variance

coefficient of variation

A scatter diagram:

Select correct option:

A) Is a graphic tool designed to portray the relationship between variable.

B) Uses interval or ratio scale data.

C) Does not allow negative values.

D) Both A and B are correct

Which of the following is the better average?

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arithmetic mean

geometric mean

harmonic mean

all above

An arrangement of data by successive time periods is called

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Time Series

Exponential smoothing

Linear regression

Representation of data

First quartile for 10.1, 10.3, 10.5, 10.5, 10.7, 10.9 is approximately ……………….

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10.5

10.3

10.1

10.2

In the central tendency Mean, Median and Mode

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Mean is better than Median

Median is better than Mode

Mean is better than Mode

All of these are true

Which is the proportion of total variation explained by the regression line?

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Simple coefficient of determination

Slope of the regression line

Mean square error

Standard error of the regression coefficient

In given Qrtly, data the first step in computing seasonal index is calculating:

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4 qtr moving average.

Discard highest and lowest values.

4 qtr. Moving total.

3 qtr. moving average.

A histogram is a special kind of …….

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Picture graph

Line graph

Bar graph

Sector graph

A coin and die can be thrown together in

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2 ways

8 ways

12 ways

None of these

The following formula for probability P(A or B) = P(A) + P(B)-P(A and B) is called

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The law of addition

The law of subtraction

The law of multiplication

None of these

Arrangement of numbers: 3,5,8,10,12,15,16 has

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‘10’ as its mode

No mode

All the terms can be taken as mode

‘11’ as its mode

Measures of dispersion indicate the

Select correct option:

average score.

extent to which scores differ from one another.

relationships between variables.

central tendency of scores.

The Harmonic Mean of the data 8, 5, 3 is

Select correct option:

3.44

4.55

5.44

None of these

The equation for the intercept of the regression line is Y=a+bX where b is

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Intercept

Slope

Equation

Dependant variable

The estimated number of visitors (‘00s) at the holiday resort was during year 2001 to 2005 were 31, 49,74,62 and 65 respectively. Then 3-year moving average of visitors are

Select correct option:

62.67, 51.45,85

82.03, 63.64,73

51.33, 61.67, 67

49.32, 32.73,93

Prices are 2,4,6,8,10 and Moving averages are 4,6,8 then Actual- Trend are

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0, 0,0

1, 2,3

3,4,5

3,2,1

The Number of combinations of 3 different objects A, B, C taken two at a time is…….

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6

4

3

5

If Mean of X = 7.857 , Mean of Y = 4.857 , and Slope = -0.47538 Then intercept of the data is

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9.978

5.627

7.911

8.592

…………..graphs are similar to bar graphs.

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column

line

conversion

sector

The graph of a regression line may be

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Linear

Quardatic

Cubic

All of these

For the class 165 – 184 the mid point will be

Select correct option:

172.5

174.5

176.5

To find mid point at least two classes are required.

The mode of the words in the word CORRELATION is

Select correct option:

L

R

O

Both R and O

The Standard Deviation of 60 , 60, 80, 70 is

Select correct option:

9.29

8.29

7.29

6.29

In how many ways can a cricket eleven be chosen out of a batch of fifteen players? Which option as

below is true according to the given statement?

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15C4

11C15

15C11

None of these.

The equation of the regression line is: Y = a + bx. The variable a is the value of

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The slope of the regression line

The X- intercept

The Y- interecept

The independent variable

If the value of any regression coefficient is zero, then two variables are

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dependent

independent

correlated

none of these

In Qualitative data we study about the ….

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Religion

Height

Weight

Income

New Forecast is (constant of exponential smothing is 'c')

Select correct option:

old forecast + c x (old actual – old forecast)

old forecast + c x (old forecast – old actual)

old forecast - c x (old actual + old forecast)

None of these

The sum of deviation of the observed values of Yi from the regression line is always equal to

Select correct option:

1

0

-1

None

Mean deviation is always

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less then S.D

equal to S.D

more than S.D

negative

The moving averages can be used for -------------.

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mode

forecasting purposes

Middle value.

Median

The business ups and downs over a period of certain number of years” is an example of

Select correct option:

Seasonal variation

Cyclical fluctuation

Secular trend

None of these

Truncated mean is also called

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Arithmetic mean

Trimmed mean

Harmonic Mean

None of these

The value of dependant variable decreases with increase in the value the independent variable in

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Positive linear relationship

Negative linear relationship

Week relationship

Strong relationship

The price of wheat falls after the harvesting of crop and rise before the sowing time” Is an example of

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Seasonal variation

Cyclical fluctuation

Secular trend

None of these

Value of Correlation coefficient always

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between +1 & -1

greater than +1

lesser than -1

between 0 &1

Which of the following is not an example of seasonal variation?

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sales of snow blowers

plant and flower sales

use of electricity

annual earnings for a large corporation

Which method of trend analysis is useful for data not having a pronounced trend or seasonality?

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Multiplicative model

Decomposition model

Exponential smoothing method

Trend analysis

If xm=4, ym=80, s(x)=sqrt2, s(y)=2sqrt10 and r=0.8, then the regression is given by

Select correct option:

y = 6x + 46

y = 16x - 64

y = 48x + 46

y = 8x + 48

The variance of data 80, 70, 80, 60, 75 is

Select correct option:

60

70

56

66

The relationship between height and educational qualification

Select correct option:

The height is independent and education is dependent variable

The height is dependent and education is independent variable

There is inverse relationship between the two

There is direct relationship between the two