PREFINAL EXAM - MATH

In semi averages method, if the number of values is odd then we drop:

• First value
• Last value
• Middle value
• Middle two values

For even number of years when origin is in the center and the unit of X being half year, then X can be coded as:

• X = year – average of years
• X = (year – average year)/2
• X = (year – average of years)/0.5
• X = year – ½ average of years

For even number of years when origin is in the center and the unit of X being one year, then X can be coded as:

• X = year – 0.5 average of years
• X = (year – average year)/2
• X = year – average of years
• X = average of years – year

For odd number of year, formula to code the values of X by taking origin at center is:

• X = year – last year
• X = year – first year
• X = year – average of years
• X = year – ½ average of years

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

• Nonlinear
• Linear
• Irregular
• Upward

When the production of thing is decreasing, this stage is called:

• Recession
• Recovery
• Prosperity
• Depression

When the production of thing is increasing towards prosperity, this stage is called as:

• Recession
• Recovery
• Boom
• Depression

When the production of a thing is minimum, this stage is called:

• Prosperity
• Recession
• Recovery
• Depression

When the production of a thing is maximum, this stage is called:

• Boom
• Recession
• Recovery
• Depression

A business cycle has:

• One stage
• Two stages
• Three stages
• Four stages