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

• A) 82.03, 63.64,73
• B) 62.67, 51.45,85
• C) 51.33, 61.67, 67
• D) 49.32, 32.73,93

The short term moments which are occurred by change in seasons are called ___________.

• A) Cyclic variation
• B) None of these
• C) Trend
• D) Seasonal variation

In regression dialog box,

• A) input range for X and Y is required.
• B) output range for X and Y is required.
• C) standard Error of mean is required.
• D) estimated regression equation is required.

If for a given data set, $$\bar Y = 10,\,\,\,\,\bar X = 5$$ and the slope is equal to 1, then the intercept of regression line will be………..

• A) 9/5
• B) 5
• C) -5
• D) 5/9

Scatter diagram is also defined as

• A) a scatter plot chart.
• B) all options are correct.
• C) a two-dimensional graphical representation of a set of data.
• D) XY chart.

If for a regression line of a given data set, intercept =5, $$\bar Y = 10,\,\,\,\,\bar X = 5$$ then the value of slope will be equal to …………

• A) 5/9
• B) 1
• C) 9/5
• D) 5

In Excel, what will the SLOPE function return if the first array has 6 data points, and the second array has 5 data points?

• A) #DIV/0! error
• B) #VALUE! error
• C) A numerical result
• D) #N/A error

Which one of the following statements is not true?

• A) You can make Predictions on the base of regression equations.
• B) You can make any predictions with results of correlation.
• C) Correlation helps proceed further with regression analysis.
• D) Correlation shows a degree of association between two variables.

Given sample slope =10, population slope=5 and Standard error =5, then T-Statistic is equal to

• A) 5
• B) 10
• C) 3
• D) 1

In time series ____________ can occur within a period of year.

• A) None of these
• B) Seasonal variation
• C) Cyclical variation
• D) Irregular variation

The formula $\frac{{{\text{sample slope}} - {\text{population slope}}}}{{{\text{standard error}}}}$ in regression analysis is used for calculating

• A) Standard error of mean
• B) T-statistic
• C) Degrees of freedom
• D) Random error

For the set of data points with Y={2,3,9,1,8} and X={6,5,11,7,5} the intercepts is

• A) 0.048387
• B) 0.57
• C) 2/3
• D) 0.003793

The excel function INTERCEPT(known_y’s,known_x’s) calculate the point(s) where the……………

• A) Line intersect y-axis
• B) Line is parallel to y-axis
• C) Line is parallel to x-axis
• D) Line intersect x-axis

In 10 matches, Player A has scored a total of 425 runs with a variance of 36, whereas Player B, a football player, has scored a total of 18 goals with a variance of 2.25. Which player exhibits more consistency?

• A) Player B
• B) Player A
• C) Both are consistent.
• D) Can’t conclude

An arrangement of data by successive time periods is called a

• A) Combination
• B) Permutation
• C) Time Series
• D) Exponential Smoothing

The study sample is the sample chosen from the

• A) range of the data.
• B) random error variables.
• C) study population.
• D) best fits of the data.

The forecast on the basis of time series is ____________.

• A) None of these
• B) True to some extent
• C) True to a great extent
• D) Never true

If a = 2 , b = 2 , independent variable = 5, then dependent variable for an estimating regression line is

• A) 18
• B) 16
• C) 8
• D) 12

A scatter diagram is a chart

• A) All the given choices are true.
• B) In which the independent variable is scaled along the horizontal axis.
• C) That portrays the relationship between two variables
• D) In which the dependent variable is scaled along the vertical axis.

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

• A) a) Maximizes
• B) d) b & c
• C) c) Reduces to zero
• D) b) Minimizes